Keratin Amino Acids

Benefits
Hair Structure ImprovementHair VolumizingNutrifying

What is Keratin Amino Acids?

Keratin Amino Acids consist of small peptides and free amino acids obtained through hydrolysis of keratin, a structural protein naturally found in hair, skin, and nails, typically sourced from animal materials like wool or feathers. In cosmetics, they appear mainly in hair care formulations such as conditioners and shampoos, but also in skin products. They function by depositing onto the hair surface to reduce friction and static, while smaller molecules may penetrate the hair shaft to aid in rebuilding disulfide bonds and fortifying the cortex. For skin, they act as humectants, attracting moisture to enhance softness and flexibility. This dual action promotes smoother, more resilient hair and supple skin without heavy residues.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.
Antistatic agent
Reduces static electricity and flyaways by improving surface conductivity, enhancing hair manageability and smoothness in conditioners and styling products.

Benefits

Supports hair structure by providing essential building blocks.

Enhances hair volume for a fuller appearance.

Nourishes hair and skin to improve overall condition.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals with damaged or weakened hair from chemical treatments.
Vegans or those preferring plant-based ingredients due to animal origin.
People seeking better hair manageability and reduced static.
People with known allergies to wool or animal proteins.
Those with dry skin needing hydration and smoothness.
Individuals sensitive to hydrolyzed protein hydrolysates.

Safety Notes

  • Rated low hazard by EWG with minimal risk of irritation.
  • Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Keratin Amino Acids

What is Keratin Amino Acids?

Hydrolyzed fragments of keratin protein used as conditioners in hair and skin products.

Is it safe for daily use?

Yes, it carries a low safety rating and suits most users without issues.

Does it work on all hair types?

It benefits various hair types, especially damaged or fine strands, by improving texture.