I highly recommend this fabulous products, I had the treatment for over 5 months, my hair is shine, smooth, and beautifully ready each day looking amazing.
Can't love more the Bio Straight Nature Eva.
I huge Thank you guys!.
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Nature Eva developed Vegan Botox with revolutionary technology that transforms dry and damaged hair, prevents breakage and provides intensive hydration, reducing frizz. With this treatment, the hair can be straight or with loose curls, looks healthy, smooth, shiny, soft to the touch and very manageable. Formaldehyde-free, Vegan Botox is an innovative and extremely effective treatment.
Please note: the shampoo and mask are sold separately.
Recommended for: Thick, dry, fragile and frizzy hair.
Benefits:
- Smooth weightless hair
- Long-lasting results
- Reduces frizz
- Deeply hydrates and nourishes
- Restores deep into the hair fibre
- High-impact shine
- Fast and simple application
- Lasts 1-2 months
- Instant results
How to use:
- Wash hair with Vegan Botox shampoo, then towel dry.
- Apply Vegan Botox Mask section per section and comb through.
- Leave to act for 20-30 minutes and rinse, removing about 90% of the product.
- Dry the hair 100% with the hair dryer. It’s recommended to divide the hair into sections to help it dry faster.
- Apply the straightening iron at a temperature between 180-190C (for fragile hair) and 190-230C (for healthy hair) at least 5-10 times on each section. For longer and perfectly straight hair apply the iron up to 15 times.
The treatment lasts between 1-2 months, although the exact time frame will vary from person to person. We highly recommend Nature Eva Argan shampoo and cream (maintenance kit) for a long-lasting effect.
Precautions:
- Professional use only
- External use
- Keep out of reach of children
- In case of contact with eyes, rinse thoroughly with clean water.
The Vegan BTKS Shampoo pH 5.0 gently prepares the hair for the BTKS treatment without damaging the cuticle. With a balanced pH, it protects the hair’s natural structure while cleansing intelligently, removing only what is necessary for the treatment to be effective.
Enriched with Multifunctional Silicones, it helps prevent dryness and leaves the hair feeling soft and manageable.
This shampoo is designed to be used before the BTKS Mask.
Please note: the shampoo and mask are sold separately.
Precautions
- For professional use only
- External use
- Keep out of reach of children
- In case of contact with eyes, rinse thoroughly with clean water
Smooth Fix, developed by Nature Eva, is an advanced straightening treatment formulated with a unique blend of active ingredients designed to straighten, rebuild, and deeply repair the hair fibre. It delivers smooth, shiny, manageable hair while maintaining strength, elasticity, and overall hair health.
The Smooth Fix Moisture (Step 1) is a high-tech preparation treatment that works inside the hair, providing deep hydration and nutrition while depositing essential amino acids. It stabilises the pH and protects the hair for the straightening process.
The Smooth Fix (Step 2) straightens the hair, adds shine, and reconstructs the fibre — all without glyoxylic acid.
Please note:
- Step 1 (Moisture Spray) and Step 2 (Smooth Fix) are sold separately.
- Step 1 must be used before Step 2 for best results.
How It Works
- Restructures Hair Bonds
- Active ingredients such as Cysteamine HCL and Cysteine HCL temporarily break disulphide bonds, allowing the hair to be reshaped.
- Hydration & Nourishment
- Oils and humectants restore moisture and elasticity, improving overall hair condition.
- Strengthening
- Proteins and amino acids rebuild the internal structure of the hair, ensuring long-lasting smoothness and strength.
- Protective Barrier
- Film-forming agents and silicones shield the hair from environmental damage and lock in moisture.
Important Tips
- Always perform a strand test to determine the correct flat iron temperature.
- High temperatures can alter hair colour — adjust heat settings sensibly.
- Professional expertise is essential for optimal results.
- Follow all steps of the procedure carefully.
Step-by-Step Process
Before You Begin
- Perform a strand test, skin test, and elasticity test.
- Shake both bottles thoroughly before use.
Step 1 – Moisture Spray
- Lightly mist the product onto the hair.
- Do not saturate — the hair should be lightly moistened, not wet.
Step 2 – Smooth Fix
- Divide the hair into sections.
- Apply Smooth Fix evenly, leaving 1 cm from the scalp.
- Leave on for 40–60 minutes, depending on the hair’s condition (professional assessment required).
Step 3 – Light Rinse
- Wet the hair lightly — do not rinse out the product completely.
Step 4 – Blow-Dry
- Blow-dry the hair 100%, ensuring it is fully dry.
Step 5 – Straighten & Seal
- Divide the hair into very fine sections (“mirror sections”).
- Use a ceramic brush and a straightening iron.
- Pass the iron through each section at least 15 times for the smoothest finish.
Final Note
The product alone does not straighten the hair, heat and professional technique are essential to achieve the expected results.
Precautions
- Perform a patch test before use.
- Use in a well-ventilated area.
- Avoid contact with eyes; rinse immediately if contact occurs.
- Professional use only.
- Follow all application instructions carefully.
Smooth Fix, developed by Nature Eva, is an advanced straightening treatment formulated with a unique blend of active ingredients designed to straighten, rebuild, and deeply repair the hair fibre. It delivers smooth, shiny, manageable hair while maintaining strength, elasticity, and overall hair health.
The Smooth Fix Moisture (Step 1) is a high-tech preparation treatment that works inside the hair, providing deep hydration and nutrition while depositing essential amino acids. It stabilises the pH and protects the hair for the straightening process.
The Smooth Fix (Step 2) straightens the hair, adds shine, and reconstructs the fibre — all without glyoxylic acid.
Please note:
- Step 1 (Moisture Spray) and Step 2 (Smooth Fix) are sold separately.
- Step 1 must be used before Step 2 for best results.
How It Works
- Restructures Hair Bonds
- Active ingredients such as Cysteamine HCL and Cysteine HCL temporarily break disulphide bonds, allowing the hair to be reshaped.
- Hydration & Nourishment
- Oils and humectants restore moisture and elasticity, improving overall hair condition.
- Strengthening
- Proteins and amino acids rebuild the internal structure of the hair, ensuring long-lasting smoothness and strength.
- Protective Barrier
- Film-forming agents and silicones shield the hair from environmental damage and lock in moisture.
Important Tips
- Always perform a strand test to determine the correct flat iron temperature.
- High temperatures can alter hair colour — adjust heat settings sensibly.
- Professional expertise is essential for optimal results.
- Follow all steps of the procedure carefully.
Step-by-Step Process
Before You Begin
- Perform a strand test, skin test, and elasticity test.
- Shake both bottles thoroughly before use.
Step 1 – Moisture Spray
- Lightly mist the product onto the hair.
- Do not saturate — the hair should be lightly moistened, not wet.
Step 2 – Smooth Fix
- Divide the hair into sections.
- Apply Smooth Fix evenly, leaving 1 cm from the scalp.
- Leave on for 40–60 minutes, depending on the hair’s condition (professional assessment required).
Step 3 – Light Rinse
- Wet the hair lightly — do not rinse out the product completely.
Step 4 – Blow-Dry
- Blow-dry the hair 100%, ensuring it is fully dry.
Step 5 – Straighten & Seal
- Divide the hair into very fine sections (“mirror sections”).
- Use a ceramic brush and a straightening iron.
- Pass the iron through each section at least 15 times for the smoothest finish.
Final Note
The product alone does not straighten the hair, heat and professional technique are essential to achieve the expected results.
Precautions
- Perform a patch test before use.
- Use in a well-ventilated area.
- Avoid contact with eyes; rinse immediately if contact occurs.
- Professional use only.
- Follow all application instructions carefully.
Vegan Smooth Blonde is an alternative to our Bio Straight treatment for Blonde/bleached hair. It contains nanoparticles of violet pigments that neutralise brassy/yellow tones to maintain the beautiful blonde colour. Just like our Bio Straight treatment it: straightens, hydrates, rebuilds, gives incredible shine and supports hair growth. The product penetrates deep into the hair fibre, reconstructing the bonds and providing intense and long-lasting straightening. Vegan Smooth Blonde was developed to reconstruct the hair while maintaining the colour, leaving it looking shiny and frizz-free with a long-lasting naturally smooth look. Combining the very best natural and sustainable ingredients from Brazil with the latest scientific technology allows it to work from within and achieve continuous improvement and protection for the scalp and hair. Each ingredient supports the essential fatty acids, nutrients, minerals, antioxidants and amino acids that are the building blocks for all hair, helping to keep it healthy, strong and shiny. Never tested on animals and free from Formaldehyde, Parabens, Sulphates or Triclosan.
Recommended for:
Blonde/Bleached hair wanting to avoid brassy/yellow tones and achieve 100% straight and smooth hair. All hair types.
Benefits:
- Neutralises brassy/yellow tones with violet pigments
- Only 1 step
- Perfectly straight hair for 6-12 months
- Eliminates 100% of frizz
- Deeply hydrating and nourishing
- Restores the hair fibres
- Gives high-impact shine
- Fast and simple application process (no need to wash hair prior to the treatment)
- Cruelty-free
- Vegan/plant-based
- Contains no harsh chemicals (e.g. Formaldehyde)
- Doesn’t produce a strong smell
- Causes no harm to the client (e.g. skin irritation, watering/runny eyes, cancer)
Step-by-step process:
- Divide the hair.
- Always shake the bottle very well.
- Apply the product.
- Pause for 40–60 minutes to let the product penetrate the strands.
- Make the hair damp.
- Dry the hair 100%.
- Use the flat iron an average of 15 times, (iron temperature: 180–230°C). Depending on the hair’s condition, type, and color
- Wash the hair with the Nature Eva Home Care line.
- Dry the hair.
Please note:
- When you rinse the hair it is normal for it to still feel slightly sticky as the product is never completely removed. It is only when the heat is applied from the straightener that the product evaporates and leaves the hair shiny and smooth.
- The treatment lasts between 6-12 months, although the exact time frame will vary from person to person.
- We highly recommend Nature Eva Argan Shampoo and Cream (maintenance kit) for a long-lasting effect.
- You can still style or curl the hair and once it is washed it will return to being straight.
Precautions:
- There’s no need to wash the hair before the treatment. If the client has hair spray, mousse or oil in the hair, wash the hair before the treatment. (DO NOT USE deep clean shampoo)
- Professional use only
- External use
- Keep out of reach of children
- In case of contact with eyes, rinse thoroughly with clean water
Vegan Smooth Blonde is an alternative to our Bio Straight treatment for Blonde/bleached hair. It contains nanoparticles of violet pigments that neutralise brassy/yellow tones to maintain the beautiful blonde colour. Just like our Bio Straight treatment it: straightens, hydrates, rebuilds, gives incredible shine and supports hair growth. The product penetrates deep into the hair fibre, reconstructing the bonds and providing intense and long-lasting straightening. Vegan Smooth Blonde was developed to reconstruct the hair while maintaining the colour, leaving it looking shiny and frizz-free with a long-lasting naturally smooth look. Combining the very best natural and sustainable ingredients from Brazil with the latest scientific technology allows it to work from within and achieve continuous improvement and protection for the scalp and hair. Each ingredient supports the essential fatty acids, nutrients, minerals, antioxidants and amino acids that are the building blocks for all hair, helping to keep it healthy, strong and shiny. Never tested on animals and free from Formaldehyde, Parabens, Sulphates or Triclosan.
Recommended for:
Blonde/Bleached hair wanting to avoid brassy/yellow tones and achieve 100% straight and smooth hair. All hair types.
Benefits:
- Neutralises brassy/yellow tones with violet pigments
- Only 1 step
- Perfectly straight hair for 6-12 months
- Eliminates 100% of frizz
- Deeply hydrating and nourishing
- Restores the hair fibres
- Gives high-impact shine
- Fast and simple application process (no need to wash hair prior to the treatment)
- Cruelty-free
- Vegan/plant-based
- Contains no harsh chemicals (e.g. Formaldehyde)
- Doesn’t produce a strong smell
- Causes no harm to the client (e.g. skin irritation, watering/runny eyes, cancer)
Step-by-step process:
- Divide the hair.
- Always shake the bottle very well.
- Apply the product.
- Pause for 40–60 minutes to let the product penetrate the strands.
- Make the hair damp.
- Dry the hair 100%.
- Use the flat iron an average of 15 times, (iron temperature: 180–230°C). Depending on the hair’s condition, type, and color
- Wash the hair with the Nature Eva Home Care line.
- Dry the hair.
Please note:
- When you rinse the hair it is normal for it to still feel slightly sticky as the product is never completely removed. It is only when the heat is applied from the straightener that the product evaporates and leaves the hair shiny and smooth.
- The treatment lasts between 6-12 months, although the exact time frame will vary from person to person.
- We highly recommend Nature Eva Argan Shampoo and Cream (maintenance kit) for a long-lasting effect.
- You can still style or curl the hair and once it is washed it will return to being straight.
Precautions:
- There’s no need to wash the hair before the treatment. If the client has hair spray, mousse or oil in the hair, wash the hair before the treatment. (DO NOT USE deep clean shampoo)
- Professional use only
- External use
- Keep out of reach of children
- In case of contact with eyes, rinse thoroughly with clean water
Bio Straight is a revolutionary and innovative Nanoplastia treatment that: straightens, hydrates, rebuilds, gives incredible shine and supports hair growth.
It penetrates deep into the hair fibre, reconstructing the bonds and providing intense and long-lasting straightening. Bio Straight was developed to reconstruct the hair, leaving it looking shiny and frizz-free with a long-lasting naturally smooth look. Combining the very best natural and sustainable ingredients from Brazil with the latest scientific technology allows Bio Straight to work from within and achieve continuous improvement and protection for the scalp and hair. Each ingredient supports the essential fatty acids, nutrients, minerals, antioxidants and amino acids that are the building blocks for all hair, helping to keep it healthy, strong and shiny. Never tested on animals and free from Formaldehyde, Parabens, Sulphates or Triclosan.
- A revolutionary and innovative hair straightening treatment.
- Natural, 100% safe, amazing results.
- Faster application.
- Does not contain formaldehyde.
- Does not burn eyes or respiratory system.
Recommended for: All hair types.
Applications per bottle 1L
- Short hair: 35 - 40 applic.
- Medium hair: 20 - 25 applic.
- Long hair: 12 - 15 applic.
- Very long or thick hair: 8 - 10 applic
Benefits:
- Only 1 step
- Perfectly straight hair for 6-9 months
- Eliminates 100% of frizz
- Deeply hydrating and nourishing
- Restores deep into the hair fibre
- Gives high-impact shine
- Fast and simple application process (no need to wash hair prior to the treatment)
- Cruelty-free
- Vegan/plant-based
- Doesn’t produce a strong smell
- Causes no harm to the client (e.g. skin irritation, watering/runny eyes, cancer)
- Contains no harsh chemicals (e.g. Formaldehyde)
Step-by-step process:
- Divide the hair.
- Always shake the bottle very well.
- Apply the product.
- Pause for 40–60 minutes to let the product penetrate the strands.
- Make the hair damp.
- Dry the hair 100%.
- Use the flat iron an average of 15 times, (iron temperature: 180–230°C). Depending on the hair’s condition, type, and color
- Wash the hair with the Nature Eva Home Care line.
- Dry the hair.
Please note:
- When you rinse the hair it is normal for it to still feel slightly sticky as the product is never completely removed. It is only when the heat is applied from the straightener that the product evaporates and leaves the hair shiny and smooth.
- The treatment lasts between 6-9 months, although the exact time frame will vary from person to person.
- We highly recommend Nature Eva Argan Shampoo and Cream (maintenance kit) for a long-lasting effect.
- You can still style or curl the hair and once it is washed it will return to being straight.
Bio Straight is a revolutionary and innovative Nanoplastia treatment that: straightens, hydrates, rebuilds, gives incredible shine and supports hair growth.
It penetrates deep into the hair fibre, reconstructing the bonds and providing intense and long-lasting straightening. Bio Straight was developed to reconstruct the hair, leaving it looking shiny and frizz-free with a long-lasting naturally smooth look. Combining the very best natural and sustainable ingredients from Brazil with the latest scientific technology allows Bio Straight to work from within and achieve continuous improvement and protection for the scalp and hair. Each ingredient supports the essential fatty acids, nutrients, minerals, antioxidants and amino acids that are the building blocks for all hair, helping to keep it healthy, strong and shiny. Never tested on animals and free from Formaldehyde, Parabens, Sulphates or Triclosan.
- A revolutionary and innovative hair straightening treatment.
- Natural, 100% safe, amazing results.
- Faster application.
- Does not contain formaldehyde.
- Does not burn eyes or respiratory system.
Recommended for: All hair types.
Applications per bottle 300ml
- Short hair: 10 - 12 applic.
- Medium hair: 6 - 8 applic.
- Long hair: 4 - 6 applic.
- Lery long or thick hair: 3 - 4 applic.
Benefits:
- Only 1 step
- Perfectly straight hair for 6-9 months
- Eliminates 100% of frizz
- Deeply hydrating and nourishing
- Restores deep into the hair fibre
- Gives high-impact shine
- Fast and simple application process (no need to wash hair prior to the treatment)
- Cruelty-free
- Vegan/plant-based
- Doesn’t produce a strong smell
- Causes no harm to the client (e.g. skin irritation, watering/runny eyes, cancer)
- Contains no harsh chemicals (e.g. Formaldehyde)
Step-by-step process:
- Divide the hair.
- Always shake the bottle very well.
- Apply the product.
- Pause for 40–60 minutes to let the product penetrate the strands.
- Make the hair damp.
- Dry the hair 100%.
- Use the flat iron an average of 15 times, (iron temperature: 180–230°C). Depending on the hair’s condition, type, and color
- Wash the hair with the Nature Eva Home Care line.
- Dry the hair.
Please note:
- When you rinse the hair it is normal for it to still feel slightly sticky as the product is never completely removed. It is only when the heat is applied from the straightener that the product evaporates and leaves the hair shiny and smooth.
- The treatment lasts between 6-9 months, although the exact time frame will vary from person to person.
- We highly recommend Nature Eva Argan Shampoo and Cream (maintenance kit) for a long-lasting effect.
- You can still style or curl the hair and once it is washed it will return to being straight.
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Endorsed by leading specialists who choose Nature Eva.
Frequently question about Nature Eva
Nanoplastia is a professional hair straightening treatment that uses nanotechnology and amino acids to restructure the hair fibre from within. Unlike keratin treatments, it is 100% formaldehyde-free, with no harsh fumes or scalp irritation. While keratin coats the outside of the strand, nanoplastia penetrates deep into the hair cortex to repair, reconstruct and align each fibre, delivering smoother, shinier and healthier results that last significantly longer.
When applied correctly by a trained professional, results can last between four and eight months, depending on the client's hair type and aftercare routine. Coarser, curlier hair may require more frequent applications, whilst finer or wavy hair tends to retain results for longer. Using sulphate-free homecare products significantly extends the longevity of the treatment.
No. Nature Eva is an exclusively professional brand. All products are sold solely to certified hairdressers, salon owners and qualified beauty professionals. To purchase, professional credentials must be verified at the time of registration. This ensures our formulations are always applied with the correct technique and the expertise required to deliver safe, standardised results.
Yes. Nature Eva requires all purchasing professionals to hold a valid hairdressing qualification or demonstrate active professional practice. We strongly recommend completing our official training programme before performing nanoplastia services, as correct product dosage, heat application and strand diagnosis are critical to achieving safe and consistent results.
Nature Eva professional products can be purchased directly through our website after credential verification. We accept all major payment methods including Stripe, Apple Pay, Google Pay, Klarna and Clearpay for flexible instalment options. International shipping is available, and orders above a set value qualify for complimentary delivery.
