Personal Care Formulation Process
1. Dissolution Sequence
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Polymers (e.g., HPMC, HEC): Disperse in cold water first, then dissolve by heating or pH adjustment to prevent clumping.
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Carbomers: Must be dispersed in water first, then neutralized with a base (e.g., TEA) to thicken.
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Powder Thickeners (e.g., Xanthan Gum): Sprinkle slowly into water under high-speed stirring to prevent agglomeration.
2. pH Control
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Carbomers: Optimal pH 6-9.
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Acrylic Emulsions: Best clarity at pH 5-7.
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Cellulose Derivatives (e.g., CMC-Na): Stable within pH 5-9.
3. Salt Dosage
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Typical dosage 0.5-2%. Excess can cause “salting out” and thinning. Recommended to add incrementally while checking viscosity.
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4. Electrolyte Tolerance
- For high-salt systems (e.g., laundry liquid), use salt-tolerant thickeners such as salt-resistant polyacrylic acids or bio-based composite gums.
5. Skin Feel and Clarity
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Refreshing Gel: Options include HEC, Carbomer.
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High Clarity: Options include Carbomer, Acrylic Emulsions, HEC.
6. About SIDLEYCHEM
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SIDLEYCHEM supplies high-quality Cellulose Ethers,
including Hydroxypropyl Methyl Cellulose (HPMC) and Hydroxyethyl Cellulose (HEC) series, suitable for personal care formulations requiring good solubility, clarity, and stability as mentioned above. Application technical support is available.
Cellulose Ether Tech+
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