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Moumoujus

THIOTAURINE.

Valuable CAS 2937-54-4 / ANTIOXIDANT

Thiotaurine, a potent biological analog of taurine, offers comprehensive skin protection by acting as a formidable antioxidant and modulating inflammatory responses. It works to detoxify the skin and support cellular repair, making it a multifaceted ingredient for various skin concerns.

Summary

Antioxidant Anti-inflammatory Detoxification Cell Repair Barrier Support Anti-aging Collagen Stimulation Pigmentation Improvement

Science

Mechanism of Action

Thiotaurine functions as a powerful free radical scavenger, effectively counteracting oxidative damage and preventing lipid peroxidation on the skin's surface. Its anti-inflammatory efficacy stems from its role as a hydrogen sulfide (H2S) donor, a gaseous signaling molecule that regulates inflammatory processes and suppresses pro-inflammatory cytokines such as IL-8 and IL-1β. Furthermore, it aids in skin detoxification by neutralizing harmful environmental substances, promotes fibroblast proliferation to repair cellular damage, and enhances the skin barrier. Its anti-aging benefits derive from its ability to reduce visible signs of aging by stimulating collagen production and inhibiting melanocyte activity for improved pigmentation.

Research

Clinical Evidence

Medium confidence
Effective range 0.05–1%
Optimal

1%

Key findings

  1. 01 Topical application at 0.05-0.5% concentration protected mouse skin from UVB-induced oxidative stress and inflammation. Additionally, it prevented apoptosis of human neutrophils, indicating a role in immune response modulation.
  2. 02 In vitro studies demonstrated that 50 μM and 100 μM concentrations significantly decreased pro-inflammatory cytokines IL-8 and IL-1β production in human chondrocytes, highlighting its anti-inflammatory properties.
  3. 03 A meta-analysis of 28 clinical trials indicated a 40-55% reduction in oxidative damage markers. A 2025 study also reported a 22% increase in fat oxidation due to improved mitochondrial function in adipose tissue, although these studies were not specified for topical skin application percentages.
  4. 04 Both in vitro and in vivo (mice xenograft model) studies demonstrated that thiotaurine significantly reduced melanoma cell viability and induced apoptosis.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 4 – 7
0 7 14

Stability

Thiotaurine maintains stability within a pH range of 4 to 7. It should be protected from strong heat above 40°C, and prolonged exposure to irradiation in the absence of thiols can lead to decomposition. For optimal long-term storage of stock solutions, refrigeration (4-8°C) or freezing (-20°C / -80°C) under nitrogen and protected from light is recommended.

Conflicts

  • Hydrogen peroxide
  • Strong heat (>40°C)
  • Irradiation (in absence of thiols)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

Thiotaurine has not undergone specific review by the Cosmetic Ingredient Review (CIR) or the Scientific Committee on Consumer Safety (SCCS). However, animal studies indicate a low acute toxicity profile with an LD50 exceeding 5,000mg/kg.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Thiotaurine is a valuable multi-functional ingredient, offering significant antioxidant, anti-inflammatory, and reparative benefits suitable for a wide range of skin types and concerns.

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