Long-Term Stability of Serum/Gel Formula with Ingredient Substitutions
Asked by: nichasrisawan
On: January 08, 2019
Product Type:
Cosmetics
Question
I have created a cosmetic formula with the following ingredients and percentages, using Hydrogenated Polydecene instead of SNP-Creamflow and SepGEL 305 instead of SNP-Emulbase:
- Water (qs)
- 1,3 Butylene Glycol 2.00%
- Squalane 3.50%
- Hydrogenated Polydecene 5%
- SepGEL 305 1-2%
- Hyaluronic Acid 1.00%
- Vitamin B3 3.00%
- Alpha Bisabolol 0.5%
- Phenoxyethanol 0.80%
Will this formula be stable in the long term?
Answer
Formula Analysis and Substitution
Based on the staff's response, the substituted formula using Hydrogenated Polydecene instead of SNP-Creamflow and SepGEL 305 instead of SNP-Emulbase is unlikely to separate over the long term. The components are considered suitable.
Important Considerations:
- If the oil ratio in the formula is significantly increased, you might need to consider increasing the amount of SepGEL 305.
- The staff suggested replacing Phenoxyethanol with Mild Preserved Eco at 1% for a milder formula.
Proposed Formula with Substitutions and Suggested Preservative Change:
- Water (qs)
- 1,3 Butylene Glycol 2.00%
- Squalane 3.50%
- Hydrogenated Polydecene 5% (replacing SNP-Creamflow 3.00%)
- SepGEL 305 1-2% (replacing SNP-Emulbase 2.50%)
- Novermer EC-1 1.00%
- Hyaluronic Acid 1.00%
- Vitamin B3 3.00%
- Alpha Bisabolol 0.5%
- Mild Preserved Eco 1% (replacing Phenoxyethanol 0.80%)
The staff's analysis indicates that this formulation should be stable over time.
Related Products Mentioned
Squalene (Synthetic, For Lip Gloss)
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Mild Preserved Eco™ (Preservative-Free)
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SepGEL 305
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