

FAQ (Frequently Asked Question)
1. What is Sodium Carboxymethyl Cellulose (CMC Sodium)?
Sodium Carboxymethyl Cellulose (CMC Sodium) is a water-soluble polymer derived from cellulose. It is widely used in personal care formulations as a thickening agent, stabilizer, and film-forming ingredient, providing improved texture and consistency to products.
2. What is the CAS number and INCI name of CMC Sodium?
CAS Number: 9004-32-4
INCI Name: Sodium Carboxymethyl Cellulose
3. What are the benefits of CMC Sodium in personal care products?
CMC Sodium is valued for its:
Thickening properties: Enhances viscosity and texture in formulations.
Emulsification support: Helps stabilize oil and water-based ingredients.
Film-forming ability: Creates a protective barrier on skin and hair.
Moisture retention: Helps maintain hydration in formulations.
Non-irritating nature: Gentle and safe for sensitive skin.
4. How does CMC Sodium work in cosmetic formulations?
CMC Sodium functions as a rheology modifier, meaning it controls the flow and thickness of a product. It improves spreadability, enhances product stability, and prevents separation of ingredients.
5. Is CMC Sodium safe for all skin and hair types?
Yes, CMC Sodium is non-toxic, hypoallergenic, and suitable for all skin and hair types. It is often used in formulations for sensitive skin due to its gentle nature.
6. What types of personal care products contain CMC Sodium?
CMC Sodium is commonly found in:
Facial creams & lotions
Shampoos & hair conditioners
Toothpaste & oral care products
Liquid soaps & body washes
Face masks & gels
7. Can CMC Sodium be combined with other ingredients?
Yes, CMC Sodium works well with:
Humectants (Glycerin, Hyaluronic Acid) to enhance hydration.
Emulsifiers (Polysorbates, Lecithin) to improve stability.
Surfactants (Cocamidopropyl Betaine, SLS) for better texture.
8. Does CMC Sodium cause any side effects?
CMC Sodium is generally safe, but in rare cases, it may cause:
Mild irritation in extremely high concentrations.
Eye irritation if applied near sensitive areas.
9. What is the recommended concentration of CMC Sodium in personal care formulations?
0.1% to 1.0% in skincare formulations.
0.5% to 3.0% in shampoos and conditioners.
Up to 5% in toothpaste and oral care products.
10. Is CMC Sodium natural or synthetic?
CMC Sodium is naturally derived from cellulose (plant fibers), but it undergoes chemical modification to improve its solubility and functionality. It is considered a semi-synthetic ingredient.
11. Where can I purchase high-quality CMC Sodium for formulation purposes?
CMC Sodium is available from cosmetic raw material suppliers. Ensure you choose high-purity, cosmetic-grade CMC Sodium for safe and effective formulations.