Peptides

R-Clostridium Botulinum Polypeptide-1

INCI: R-CLOSTRIDIUM BOTULINUM POLYPEPTIDE-1

Reviewed by Rosie · Last updated 2 Jun 2026

Also known as: R-clostridium Botulinum Polypeptide-1

A peptide derived from Clostridium botulinum that conditions and softens the skin

Best For Skin Types

All

Addresses

Dryness, Hydration, Fine lines

Usage Frequency

Daily

What Is R-Clostridium Botulinum Polypeptide-1?

R-Clostridium Botulinum Polypeptide-1 is a peptide derived from Clostridium botulinum, a bacterium. In skincare, it functions as a skin conditioning agent, working to improve the texture and feel of the skin's surface.

Unlike the neurotoxin associated with injectables, this polypeptide is used topically in cosmetic formulations at concentrations designed to condition rather than relax muscle. It is included in skincare products to support skin softness and smoothness.

How It Works

As a peptide, R-Clostridium Botulinum Polypeptide-1 conditions the skin by interacting with the outer layers to improve hydration and tactile smoothness. Peptides in skincare are thought to support the skin's natural functions by influencing moisture retention and surface texture.

The mechanism is primarily conditioning rather than active cellular change, meaning it works to improve how skin feels and looks rather than driving deeper biological shifts.

Clinical Evidence & References

Published research on this specific polypeptide in skincare is limited. Most evidence for its use comes from cosmetic chemistry and manufacturer testing rather than extensive independent clinical trials.

Like many peptide ingredients in skincare, it is generally accepted as a safe conditioning agent. However, robust evidence for dramatic skin improvements remains modest. It is best viewed as a supportive texture-enhancing ingredient rather than a treatment for specific skin concerns.

How to Use

This ingredient is typically used in leave-on products such as serums, moisturisers, and masks. Apply as directed by the specific product, usually once or twice daily. It works well alongside other peptides and hydrating ingredients, though no special pairing restrictions apply.

Safety & Precautions

R-Clostridium Botulinum Polypeptide-1 is generally well-tolerated and considered safe for topical use in cosmetics. Patch testing is recommended for those with known sensitivity to peptides or the bacterium.

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