Serum Formulation Similar to Lancome Genifique Texture

Based on the ingredient list you provided for Lancome Genifique Serum and the staff's recommendations for achieving a similar texture, here are the key ingredients and suggested percentages to use:

• Glycerin: Use at 10%
• Ethyl Alcohol (as a substitute for Alcohol denat.): Use at 7%. This helps create a light, fast-absorbing texture with a cooling sensation. Add it in the final step, avoiding heat.
• Dimethicone: Use at 5%
• Double Hyaluron Liquid (as a substitute for Sodium Hyaluronate): Use at 4%
• FloraSolve (as a substitute for PEG-20 Methyl Glucose Sesquistearate, PEG-60 Hydrogenated Castor Oil): Use at 3%
• Ceramide Complex (as a substitute for Salicyloyl Phytosphingosine): Use at 2%
• Satin Mousse™ (as a substitute for Ammonium Polyacryldimethyltauramide/Ammonium Polyacryloyldimethyl Taurate): Use at 1%
• Xanthan Gum: Use at 0.1%

The remaining portion of the formula would be water and other desired active ingredients.

Regarding your question about Alcohol, the staff explained that it's used to create a light, fast-absorbing feel and provides a cooling sensation as it evaporates. It should be added at the final step without heat. While Isododecane can be used as an alternative for its fast evaporation and smooth feel, it will not provide the same cooling effect as alcohol.

These suggested percentages are a starting point based on the analysis of the ingredient list and equivalents available. You may need to adjust the percentages slightly to achieve your desired final texture.