Melasma Treatment Formula for Oily Skin

Here is a suggested formula and mixing method for a light, non-greasy melasma treatment suitable for oily skin, using the ingredients you provided:

Formula:

• Water: 79%
• N-Acetyl-D-Glucosamine: 4%
• Tranexamic Acid: 3%
• Glycerin: 3%
• Niacinamide: 2%
• 4-butyl Resorcinol: 2%
• LipidSoft: 5%
• Phenoxyethanol: 0.5%
• Light Cream Maker™: 1.5%

Total: 100%

Analysis and Recommendations:

Your chosen active ingredients (N-Acetyl-D-Glucosamine, Tranexamic Acid, Niacinamide, and 4-butyl Resorcinol) are excellent for targeting melasma and hyperpigmentation. The percentages you selected are within recommended usage rates for cosmetic products.

1. Mixing Phases: Your understanding of separating into water and oil phases is correct. The water-soluble ingredients (N-Acetyl-D-Glucosamine, Tranexamic Acid, Glycerin, Niacinamide, Phenoxyethanol, and Water) form the water phase. The oil-soluble ingredient (4-butyl Resorcinol) needs to be dissolved in an oil phase, such as LipidSoft.

2. LipidSoft Percentage for 4-butyl Resorcinol: 4-butyl Resorcinol is soluble in oil. Using 5% LipidSoft should be sufficient to dissolve 2% 4-butyl Resorcinol and provide a light feel suitable for oily skin. LipidSoft also acts as an emollient, helping with spreadability.

3. Thickener for Light Texture: To achieve a light, non-greasy texture suitable for oily skin and to emulsify the oil and water phases, an emulsifying thickener is recommended. Light Cream Maker™ is a suitable choice as it functions as both an emulsifier and thickener, works without heat, and helps create a light, smooth texture. A usage rate of 1.5% is suggested for a light cream consistency.

Mixing Instructions:

1. Prepare the Water Phase: In a container, combine Water, N-Acetyl-D-Glucosamine, Tranexamic Acid, Glycerin, Niacinamide, and Phenoxyethanol. Stir or mix until all powder ingredients are completely dissolved.
2. Prepare the Oil Phase: In a separate container, combine LipidSoft and 4-butyl Resorcinol. Stir until the 4-butyl Resorcinol powder is fully dissolved in the LipidSoft.
3. Add Light Cream Maker™ to the Oil Phase and mix well to ensure it is dispersed.
4. Combine Phases: Gradually add the Oil Phase (containing LipidSoft, 4-butyl Resorcinol, and Light Cream Maker™) to the Water Phase while continuously stirring or blending. Continue mixing until a uniform, light cream texture is formed.

Remember to store the finished product properly, away from light and heat, as Activated Resorcinol is light-sensitive.