Formulating for Oily, Acne-Prone, Sensitive Skin: Ingredients and Percentage Conversion

Hello! I understand you are looking for formulations to care for oily, clogged-pore-prone, and sensitive skin, and you want to mix them yourself, needing information on suitable ingredients and how to convert percentages to grams.

Based on your previous inquiry and the replies you received, the staff recommended that you check various formulations in the forum's "formulation library" ("ห้องรวมสูตร"), which is a reliable source of formulations. Specifically, the BHA Toner and gentle Cleanser formulations should be a good starting point for you.

Regarding converting ingredient percentages to grams, you can do this by determining the total quantity you want to mix (e.g., 100 grams or 50 grams) and then multiplying the percentage of each ingredient by that total quantity. For example, if a formula specifies 5% of ingredient A and you want to mix a total of 100 grams, you will need 5 grams of ingredient A (5% of 100 grams). If you want to mix 50 grams, you would use 2.5 grams of ingredient A (5% of 50 grams). The link for calculation provided by the staff will explain this in more detail.

For ingredients suitable for your skin type (oily, clogged pores, sensitive), key ingredients commonly used and effective include:

• Salicylic Acid (BHA): This is a BHA group ingredient that helps exfoliate dead skin cells, dissolve clogged pores, and has antibacterial properties, making it excellent for clogged pores and facial oiliness. It comes in various forms, such as powder (Salicylic Acid) that must be dissolved in a solvent, or more easily water-soluble forms (e.g., Complex Salicylic Acid, SalicSoft™). You can choose based on the suitability for the formula you plan to make.
• Safe-B3™ (Vitamin B3, Niacinamide): Vitamin B3 offers various benefits for the skin, including reducing facial oiliness, reducing red and dark spots from acne, strengthening the skin barrier, reducing inflammation, and increasing moisture, making the skin stronger and less prone to irritation overall.
• Zinc PCA: This is another ingredient that effectively helps control facial oiliness and also has properties that help heal wounds (like acne marks) and stimulate collagen production. It is suitable for acne-prone skin that needs recovery.
• Cocamidopropyl Betaine: This is a gentle surfactant commonly used in cleansing products like cleansers or facial foams to help clean dirt and oil without making the skin dry or irritated.

Additional Recommendations:

• Start by finding basic formulations in the "formulation library" that contain these key ingredients.
• Read the details of each ingredient you are interested in from the product information to understand its properties, mixing method, and recommended usage rate.
• When you have a formula and understand how to calculate in grams, start by mixing small quantities to test and adjust the formula according to your skin's needs.
• When mixing cosmetics, it is crucial to ensure the cleanliness of the equipment and containers used to prevent contamination.

I wish you success in making your own products! If you have any further questions about specific ingredients, feel free to ask.