Snapshot
- Overview
- An RNA-derived humectant that plumps skin and smooths its surface.
- Category
- Hydration, Skin Conditioning, Tone/Texture
- Type
- Humectant
Guanosine
Guanosine is a water-soluble purine nucleoside found in RNA and used as a cosmetic humectant. In formulas it's included to attract moisture, support a smoother feel, and refine product sensory qualities, with limited evidence for skin-conditioning roles.
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Our take
Is Guanosine a Good Ingredient?
It's Fair because clinical evidence for topical benefits beyond basic humectancy is limited, so effects are likely modest. Minor irritation is uncommon but possible, especially at high concentrations or on compromised skin, which is enough to keep it out of Good.
What it does
Skin Benefits
Draws water to the skin for a plumper, softer feel and a more refined surface. Evidence for broader skin benefits is limited, so results may be subtle.
Where you'll find it
Uses in Skincare & Cosmetics
Included in lightweight serums, toners, and gel moisturizers to boost hydration without heaviness, and in creams to improve slip and afterfeel.
Before you use it
Safety
Generally well tolerated as a water-soluble humectant, with low likelihood of irritation. Patch test if skin is sensitive or compromised. No known specific regulatory restrictions at typical cosmetic levels.
Products with Guanosine
