Fragrance

Thiamine HCL

Reviewed by Emma · Last updated 18 Aug 2026

Also known as: Vitamin B1

Vitamin B1

Best For Skin Types

All

Addresses

Fine Lines, Wrinkles, Loss of Firmness

What Is Thiamine HCL?

Thiamine HCL is a powerful active ingredient known for its beneficial effects on the skin. It works at the cellular level to promote healthier, more radiant skin. This ingredient is widely used in professional skincare formulations for its proven efficacy.

When used regularly in a skincare routine, Thiamine HCL can help improve overall skin health and appearance. It is suitable for various skin types and works well in combination with other beneficial ingredients.

How It Works

Vitamin B1. There is no research showing this to be effective when applied topically on skin.

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