Hydroxypropylcellulose

What is Hydroxypropylcellulose?

Hydroxypropylcellulose is a semisynthetic, non-ionic polymer derived from natural cellulose sourced from wood pulp or cotton linters, chemically modified by etherification with propylene oxide to enhance solubility. In skincare and cosmetic products like creams, lotions, sunscreens, and makeup, it serves as a multifunctional ingredient. It increases viscosity for smoother application and suspension of particles, stabilizes emulsions by reinforcing the interface between oil and water phases to avoid separation, and deposits a flexible, transparent film on skin or hair. This film boosts product durability, water repellency, and adherence without greasiness. Its compatibility with diverse pH levels and ingredients makes it ideal for clear gels and aqueous formulations, contributing to overall product integrity and sensory appeal.

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

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Binder
Helps hold solid ingredients together to form cohesive tablets, compacts, or sticks, improving pressability, integrity, and wear of the finished product.
Emulsion stabilizer
Improves emulsion robustness by preventing droplet coalescence and phase separation, often by thickening, structuring, or strengthening the interfacial layer.
Film former
Creates a continuous film on skin or hair to improve wear, water resistance, transfer resistance, shine, or hold in sunscreens, makeup, and styling products.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.
Binding
Provides cohesion by helping ingredients stick together, improving the strength and integrity of pressed powders, tablets, or solid bars.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.

Benefits

Improves emulsion stability for longer-lasting product texture.

Forms protective films enhancing makeup wear and water resistance.

Controls viscosity for easier spreading and comfortable feel.

Who It's For

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

Who May Benefit Who Should Avoid
People using long-wear makeup or sunscreens.
Those with rare cellulose derivative sensitivities.
Individuals preferring stable lotions and creams.
People preferring minimalist formulations.
Users seeking smooth-textured, non-sticky products.
Individuals who patch test new ingredients.

Safety Notes

  • Generally recognized as safe for cosmetic use by regulatory reviews.
  • Low potential for comedogenicity or irritation in formulations.

Frequently Asked Questions about Hydroxypropylcellulose

What is hydroxypropylcellulose?

A cellulose derivative from plants, used to thicken and stabilize skincare products.

Is it safe for sensitive skin?

Typically low irritation risk, well-tolerated in cosmetics.

Does it cause breakouts?

Low comedogenic rating, unlikely to clog pores.