DropBrigt® Litein | Oxothiazolidinecarboxylic Acid

DropBright® Litein is a powerful whitening and anti-oxidation ingredient derived from cysteine (an amino acid precursor). Known for its ability to inhibit tyrosinase activity, it addresses pigmentation by reducing melanin synthesis, correcting skin hyperplasia, and improving keratinization. DropBright® Litein enhances glutathione biosynthesis in subcutaneous cells, creating a natural protective antioxidant layer that improves skin texture, brightness, and elasticity while reducing wrinkles.

INCI Name: Oxothiazolidinecarboxylic Acid
Trade Name: DropBright® Litein
CAS Number: 19771-63-2
Function: Whitening and Anti-oxidation
EWG Score: 1 (Low Hazard)

Benefits

1. Whitening and Brightening:

   • Inhibits tyrosinase activity to reduce melanin synthesis.
   • Corrects epidermal atypical hyperplasia, leading to smoother, brighter, and whiter skin.

2. Anti-Oxidation:

   • Enhances glutathione biosynthesis, boosting the skin's natural antioxidant system.
   • Protects against free radicals and slows down aging.

3. Improved Skin Health:

   • Thickens the skin’s clear keratin layer while thinning the cuticle, reducing melanosomes.
   • Enhances skin elasticity, flexibility, and UV resistance.

4. Quick and Effective:

   • Rapid results with noticeable improvement after more than 10 applications at a concentration of 1%–10%.

5. Compatibility:

   • Highly stable across a broad pH range and compatible with surfactants and other active ingredients.
   • Synergizes well with other cosmetic systems, including traditional Chinese medicine skincare ingredients.

Suggested Usage

• Concentration:
  • Daily Care Products: 0.5%–2.0%
  • Special Purpose Products: 2.0%–5.0% or higher
• Applications:
  • Whitening creams, serums, and essences
  • Anti-aging products
  • Personal care formulations requiring safe, fast, and effective whitening properties
• Method of Incorporation:
  • Water-soluble; easily mixed into formulations for uniform distribution.

Features

• Small-molecule whitening agent with rapid absorption.
• Does not cause itching, irritation, or acne within recommended usage levels.
• Environmentally safe with no toxicity or pollution concerns.

Physicochemical Properties

• Appearance: White crystals or crystalline powder
• Assay: ≥98.0%
• Specific Rotation: -59.0° to -62.5°
• Loss on Drying: ≤0.3%
• Residue on Ignition: ≤0.1%
• Heavy Metals (Pb): ≤30 ppm
• Arsenic (As): ≤1 ppm

Cautions

• Storage:
  • Store in sealed, dark containers in a cool, dry place. Avoid exposure to light.
• Environmental Compatibility:
  • Non-toxic and environmentally friendly.

Packaging and Shelf Life

• Packaging: Available in 1 kg bags or 25 kg barrels.
• Shelf Life: 2 years under recommended storage conditions.