100ML – £57,52
1000ML – £350

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 providing intense long-lasting straightening. Bio Straight leaves the hair shiny and frizz-free with a long-lasting naturally smooth look.

ONLY FOR PROFESSIONAL USE – Please complete the form below to place an order.

– Only 1 step
– Eliminates 100% frizz
– Straightens the hair 100%
– Perfectly straight hair for 6-12 months
– Deeply nourishing and hydrating
– Restores deep into the hair fibre
– Gives high-impact shine
– Fast and simple application (no need to wash hair prior to the treatment)
– Cruelty-free
– Vegan/plant-based
– Contains no harsh chemicals (e.g. Formaldehyde)
– Does not produce a strong smell
– Holds no health risk to the client or professional
– Dermatologically tested

For all hair types.
Customers who would like to achieve 100% straight and smooth hair.

Bio Straight is a revolutionary and innovative nanoplastia treatment that has taken the market by storm. Bio Straight  straightens, hydrates, rebuilds, gives incredible shine and supports hair growth.

Nature Eva Bio Straight was developed to promoting intracellular nutrition. Its effect reconstructs the fibre, leaving it shiny, frizz-free with a long-lasting smooth effect.  Bio Straight: with just one step, it is not necessary to wash the hair before applying the product. This reduces the procedure time  by up to 40-60 minutes.

Watch video here.

HOW TO USE: Complete skin and strand test before use.

  • Shake the bottle well before use.
  • Divide the hair into sections before applying.
  • Apply the product to every hair strand, massage, then distribute the product evenly with a fine tooth comb from roots to ends.
  • Let the product develop for 50-60 minutes.
  • Pre-rinse (WET) the hair, DO NOT REMOVE the product.
  • Dry the hair 100%  with the hairdryer. No need to brush.
  • Apply straightening iron slowly in small sections. 15 times on average depending on the structure and strength of the fibre. We recommend to use a ceramic brush to ensure the straightening iron touches each strand of hair. 
  • Wash the hair with our Bio Straight Shampoo. Then condition with our Bio Straight Conditioner. 
  • Dry the hair again with a hair dryer from roots to ends. 

Please Note:

  • When you rinse the hair it is normal for it to still feel sticky as the product should not be completely removed. 
  • The treatment lasts between 6-12 months.
  • We highly recommend Nature Eva Argan Shampoo and Argan Cream.
  • You can still style and curl the hair after the treatment. Once it is washed it will return to being straight. 
  • Professional use ONLY.
  • There is 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 cleanse shampoo).
  • External use only.
  • Keep out of reach of children.
  • In case of contact with the eyes, rinse thoroughly with clean water. 

Hydrolyzed Wheat Protein – Rich in amino acids and vitamins to work as a conditioning agent. Break through the hair cuticle to strengthen the hair strand, provide moisture, prevent breakage and add shine. 

Hydrolyzed Vegetable Keratin – Replaces the amino acids lost due to damage of the hair fibre or hair sensitised by dyes and chemical processes.

Hydrolyzed Collagen – Hydrolyzed Collagen has approximately 20 types of amino acids in its composition. In addition to being deeply nourishing, it also has reconstructive properties. 

Amino Acids – The combination of different amino acids restores the hair and gives strength, elasticity and resistance. 

Coconut Oil – Antioxidant properties provide intense hydration to the hair and is rich in vitamin E and Omega 6, fighting unwanted split ends, maintaining a protective layer and eliminating frizz.

Cranberry Extract –A powerful antioxidant that protects the hair fibre from ageing and oxidation damage. It also prevents hair colour from fading, keeping it bright and vibrant. 

Organic Acids – Organic acids are found naturally in the juices of many fruits and vegetables. When in contact with the hair, they help to seal the cuticles and eliminate alkali residues (accumulation of products that damage the hair). In addition to being activated with the heat of the dryer and iron, producing a lot of shine, softness and reduced frizz. 

Custom Order

We value the expertise of all you professionals, which is why we do not sell this product to the general public, we only sell to professional hair stylists such as you. To place an order, please fill in the form below and we will send you an invoice for payment. 

Please enter the quanitites of the products you would like to purchase below:
Nature Eva Logomark


Thank you for your enquiry. We will get back to you as soon as possible.