Can cosmetic raw materials be directly applied to the face?

It is not recommended to use cosmetic raw materials directly on the face. Cosmetics ingredients usually contain high concentrations, and direct use may cause irritation or damage to the skin. For example, glycerin can be applied directly to the face, but it is recommended to dilute it before use, and it is best to use it at night. It is not recommended to use ingredients such as yeast, niacinamide extract, and tranexamic acid directly on the face. Double yeast may damage the skin due to high concentration, niacinamide extract may cause skin irritation, and inappropriate dosage of tranexamic acid may also cause skin damage.
The composition and concentration of cosmetic raw materials
The concentration and ratio of cosmetic raw materials are usually adjusted by professionals to ensure safety and effectiveness. Directly using high concentrations of raw materials may cause skin allergies, irritation, or other adverse reactions. For example:
Double yeast: Although it helps improve skin problems, high concentrations of double yeast may cause damage to the skin.
Niacinamide solution: It has whitening and moisturizing effects, but high concentrations of niacinamide may cause excessive skin irritation or allergies.
Chuanming acid: Improper dosage may cause skin damage.
The correct method for using cosmetic raw materials
For the safe use of cosmetic raw materials, it is recommended to:
Dilution use: Dilute the raw materials to the appropriate concentration before use.
Small area trial: Conduct a small area trial behind the ear or inside the arm to observe for any adverse reactions.
Choose legitimate products: Use skincare products produced by legitimate manufacturers and pay attention to whether the ingredients are suitable for your skin type.
Avoid prolonged use: Even diluted ingredients are not recommended to come into direct contact with the skin for extended periods of time.