Hydrolyzed Yeast

Benefits
Nutrifying

What is Hydrolyzed Yeast?

Hydrolyzed yeast comes from yeast, primarily Saccharomyces cerevisiae, a single-celled fungus commonly used in food production. Through hydrolysis, typically enzymatic breakdown, the yeast cell walls are ruptured, releasing soluble fractions rich in amino acids, peptides, nucleotides, vitamins like B-complex, and trace minerals. In cosmetics, it falls under conditioning agents for skin care creams, lotions, serums, and hair products such as shampoos and conditioners. It works by depositing a lightweight film on the skin or hair shaft, which helps retain moisture, reduces surface friction, and supports the skin's natural barrier without heaviness. This makes it suitable for formulations aiming to enhance texture and feel across various product types.

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.

Benefits

Supports skin and hair nourishment through natural peptides and vitamins.

Promotes softness and smoothness by forming a protective moisture-retaining layer.

Improves hair manageability, shine, and ease of styling.

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 dry or rough skin seeking added hydration.
People with known yeast or fungal allergies.
People with dull or tangled hair looking for conditioning effects.
Individuals sensitive to fermented ingredients.
Those preferring natural-derived ingredients for daily routines.
Those experiencing irritation from protein-based conditioners.

Safety Notes

  • Rated low hazard by EWG with scores of 1.
  • Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Hydrolyzed Yeast

What is hydrolyzed yeast?

A cosmetic ingredient from enzymatically broken-down yeast cells, rich in amino acids and vitamins for conditioning.

Is it safe for sensitive skin?

Generally low irritation potential, suitable for most but patch test if allergic to yeast.

Does it benefit hair products?

Yes, enhances softness, shine, and manageability in shampoos and conditioners.