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ReNu21 Nano Repair Leave In Mask

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Key Ingredient

16 Amino Acids

Alanine, Lysine, Leucine, Serine, Proline, Hydroxyproline, Phenylalanine, Threonine, Glycine, Glutamic Acid, Histidine, Isoleucine, Methionine, Tyrosine, Tryptophan, and Arginine Are all amino acids that play vital roles in protein synthesis, helping to strengthen hair fibers and improve elasticity

Caprylic Acid

Known for its antimicrobial properties, helps maintain a healthy scalp environment


A natural moisturizer, aids in retaining scalp hydration

Sodium PCA

A powerful humectant, which helps hair retain moisture, enhancing its texture and appearance

ArginineItaconic Acid

A unique blend, offers both the nourishing properties of Arginine and the film-forming abilities of Itaconic Acid, which can protect hair from environmental stressors and improve its overall look and feel


Aqua, Cetearyl Alcohol, Propylene Glycol, Behentrimonium Chloride, Isopropyl Palmitate, Myristyl Lactate, Phenoxyethanol, Parfum, Arginineltaconic Acid, Alcohol, Linum Usitatissimum (Linseed) Seed Extract, Panthenol, Hydrolyzed Wheat Protein, DMDM Hydantoin, Tocopheryl Acetate, Polyglyceryl-10 Laurate, Salvia Hispanica Seed Extract, Lactic Acid , Hydrolyzed Corn Protein, Hydrolyzed Soy Protein, Alanine, Lysine, Caprylic Acid , Xylitol, Aspartic Acid, Sodium PCA, Leucine, Serine, Proline, Hydroxyproline, Phenylalanine, Threonine, Glycine, Glutamic Acid, Histidine, Isoleucine, Methionine, Tyrosine, Tryptophan

Spotted On

This product is perfect for:

All Hair Type

Damaged Hair

At Home Use

Salon Professionals

Frequently Asked Questions

ReNu 21 is a Nano Repair Leave-In Mask that utilizes a complex of 21 amino acids to help reconstruct damaged hair, reconnect broken bonds, and mimic hair structure for healthier, shinier, and more resilient strands.

Simply apply ReNu 21 to clean, towel-dried hair. Massage it through your hair, focusing on damaged areas. Do not rinse out. Style as usual and witness the transformation with consistent use.

For optimal results, incorporate ReNu 21 into your hair care routine regularly. With each use, you should notice improvements in hair health and damage repair.

Yes, ReNu 21 is formulated to benefit all hair types and textures. Its amino acid complex is designed to address damage and improve hair health universally.

No, ReNu 21 is created to penetrate the hair shaft and repair without leaving heavy residues, maintaining your hair's natural volume and movement.

Absolutely! ReNu 21 is safe for color-treated hair and works to repair the damage that coloring can cause, ensuring your color looks vibrant for longer.

You will see instant results with ReNu 21 as it works to make hair strands healthier, shinier, and more flourishing, visibly improving with each application.