Glutathione
Also known as: L-Glutathione, GSH, Reduced glutathione
A tripeptide antioxidant that neutralizes free radicals and may support skin brightening and detoxification.
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Get the appWhat it does
Glutathione is a powerful intracellular antioxidant that scavenges free radicals and reactive oxygen species, protecting skin from oxidative stress. It may also inhibit melanin production and support the skin's natural detoxification processes. In cosmetics, stability is challenging, so formulations often include stabilized or precursor forms.
Benefits
- Potent antioxidant protection against environmental damage
- May reduce hyperpigmentation and promote skin brightening
- Supports skin resilience and anti-aging
- Complements other antioxidants synergistically
Who it suits
- Dull or hyperpigmented skin
- Those seeking brightening and anti-aging benefits
- Sensitive skin (when stabilized properly)
How to use
Use in serums or moisturizers as directed. For stability, choose products in opaque packaging and avoid mixing with vitamin C or other destabilizing actives unless formulation is designed for it.
Pairs well with
Niacinamide, Vitamin E, Ferulic acid
Be careful pairing with
Vitamin C (L-ascorbic acid in unstable forms), High-pH formulations
Safety & cautions
Glutathione is notoriously unstable in cosmetic formulations and easily degrades when exposed to light, heat, or air; efficacy depends heavily on stabilization technology and pH. Oral supplementation data on skin effects is limited; topical evidence is emerging but mixed.
Educational information, not medical advice. Concentration and formulation change how an ingredient behaves.