Peptides

Sr-(Oligopeptide-91 Clostridium Botulinum Polypeptide-1)

INCI: SR-(OLIGOPEPTIDE-91 CLOSTRIDIUM BOTULINUM POLYPEPTIDE-1)

Reviewed by Daisy · Last updated 2 Jun 2026

Also known as: Sr-(oligopeptide-91 Clostridium Botulinum Polypeptide-1)

A peptide derivative designed to support skin conditioning and texture refinement

Best For Skin Types

All

Addresses

Dryness, Hydration

Usage Frequency

Daily

What Is Sr-(Oligopeptide-91 Clostridium Botulinum Polypeptide-1)?

Sr-(Oligopeptide-91 Clostridium Botulinum Polypeptide-1) is a peptide-derived ingredient created through biotechnological processes. It belongs to a class of functional peptides that are incorporated into skincare formulations primarily for their skin-conditioning properties.

This ingredient works at the surface level of the skin, where it is thought to help maintain skin texture and overall condition. Like other peptides in cosmetics, it does not penetrate deeply into the dermis and operates within the constraints of cosmetic regulation rather than pharmaceutical action.

How It Works

Peptides function as skin conditioners by forming a protective layer on the skin's surface and helping to maintain hydration. This ingredient likely works through similar mechanisms — interacting with the outermost layers of skin to enhance moisture retention and support a more refined appearance.

It is important to note that cosmetic peptides operate topically and do not systemically mimic the effects of the biological source material. The cosmetic form is designed to condition and support skin barrier health rather than trigger deeper physiological changes.

Clinical Evidence & References

Published clinical data specific to this ingredient is limited. Most evidence for peptide-based skin conditioning comes from broader studies on peptides as humectants and film-formers rather than targeted research on this particular derivative.

The ingredient is generally considered safe for topical use and well-tolerated in formulations. If you are considering products containing this peptide, look for complementary evidence on the overall formulation rather than relying solely on this single ingredient for dramatic results.

How to Use

This ingredient is typically incorporated into serums, moisturisers, and treatment products at concentrations determined by the manufacturer. Use as directed by your product instructions. It pairs well with other hydrating and conditioning ingredients, and can be used daily as part of a consistent routine. There is no evidence that varying application frequency will enhance its effects.

Safety & Precautions

This ingredient is generally well-tolerated and is permitted for use in cosmetic formulations. Those with known sensitivities to peptides or the source material should patch test before widespread use.

Frequently Asked Questions

From the Clinic

Not sure what your skin actually needs?

Two minutes, a few questions, and we’ll point you at what matters — no guesswork.

Take the skin quiz

Learn More About Skincare Ingredients

Explore our comprehensive ingredient glossary to understand what's in your products.

Browse All Ingredients

Authorised Stockist

Official UK retailer

Tracked Delivery

Free UK shipping over £50

5 Star Rating

Trusted by thousands

Expert Advice

Free consultations