Guanylcystamine Hbr
INCI: GUANYLCYSTAMINE HBR
Reviewed by Daisy · Last updated 18 Aug 2026
What Is Guanylcystamine Hbr?
Guanylcystamine Hbr (INCI: GUANYLCYSTAMINE HBR) is a cosmetic ingredient listed in the EU CosIng inventory. Guanidine, N,N'-(Dithiodi-2,1-Ethanediyl)Bis-, Dihydrobromide.
Its declared cosmetic function is skin conditioning.
Source: European Commission CosIng inventory.
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 quizRelated Ingredients
Broccoli … Extract
Plant-derived extract with antioxidant and conditioning properties for skin protection
(Eclipta Prostrata/Houttuynia Cordata) Leaf Extract
A botanical blend traditionally used to support skin conditioning and resilience
1-Methylhydantoin-2-Imide
A skin-conditioning agent that helps maintain skin hydration and texture
10-Hydroxystearic Acid
A naturally-derived fatty acid that supports skin structure and resilience
2-Mercaptonicotinoyl Glycine
A targeted approach to managing excess melanin production and uneven skin tone
2-O-Ethyl Ascorbic Acid
A stable vitamin C derivative that supports skin brightness and texture refinement
Learn More About Skincare Ingredients
Explore our comprehensive ingredient glossary to understand what's in your products.
Browse All IngredientsShop Our Products
Find professional skincare solutions at Skintique.