Lactic Acid (CAS 50-21-5) is a gentle AHA produced by fermentation and naturally present in milk. It uniquely combines exfoliation with humectant moisturizing — smoothing skin while attracting and binding moisture, making it ideal for sensitive and dry skin.
CAS number: 50-21-5 · INCI: Lactic Acid
Key Benefits
- Key Benefits for Formulation</h2>
- <strong><li><strong>Mild exfoliation:</strong></strong> smoother skin with less irritation than glycolic acid</li>
- <strong><li><strong>Humectant moisturizing:</strong></strong> attracts and binds water to the skin</li>
- <strong><li><strong>Improves skin barrier:</strong></strong> texture and barrier function improve over time</li>
- <strong><li><strong>Sensitive & dry skin friendly:</strong></strong> one of the most tolerable AHAs</li>
- <strong><li><strong>pH adjustment:</strong></strong> effective acidulant in formula optimization</li>
Main Applications
- Main Applications</h2>
- <li><strong>Gentle exfoliating serums & lotions:</strong> daily AHA care</li>
- <li><strong>Moisturizing & smoothing creams:</strong> dual-action hydration</li>
- <li><strong>Body care:</strong> rough skin and keratosis pilaris</li>
- <li><strong>pH-adjusting systems:</strong> formula optimization</li>
- <li><strong>Anti-aging & skin-renewal products</strong></li>
Recommended Use Levels
</h3>
EU & Regulatory Notes
Cosmetic ingredients supplied for EU markets must be used in compliance with Regulation (EC) No 1223/2009 on cosmetic products. Always verify the current Annex status and concentration limits for your finished product and market before launch; Aogubio provides full documentation (COA, SDS, technical data) to support your registration and safety assessment.
Why Buy Bulk Lactic Acid from Aogubio?
- GMP-certified manufacturing: consistent quality from raw material to finished ingredient
- Complete documentation: COA, SDS and heavy metal test reports with every batch
- Flexible supply: samples to full container loads, MOQ from 1 kg
- Export experience: reliable shipping to EU, North America and Asia
FAQ
What is the CAS number of lactic acid?
CAS 50-21-5.
What is the INCI name?
Lactic Acid.
What dosage is recommended?
Typically 1%–10% depending on format and skin tolerance; validate in finished product trials.
View the Lactic Acid product page for specifications and to request samples.
Aogubio Co., Ltd (Imaherb) is a GMP-certified manufacturer of bulk ingredients. Every batch ships with COA, MSDS and heavy metal test reports.