On the Preparation of Glycolic Acid and Salicylic Acid
If you want to make a good preparation of glycolic acid and salicylic acid, you must first understand its properties. Glycolic acid is hydrophilic, has small molecules, can quickly penetrate the stratum corneum of the skin, promote keratinocyte renewal, rejuvenate the skin's luster, and has a good effect on moisturizing. Salicylic acid is fat-soluble, can penetrate deep into pores, clear oil, inhibit Propionibacterium acne, and treat acne well.

When preparing, when careful about the ratio. If glycolic acid is more and salicylic acid is less, the skin can be significantly refreshed, and exfoliation is moderate. It is suitable for those who are new to such acids and have slightly sensitive skin, but the power of oil control and acne removal is slightly weaker If the proportion of salicylic acid increases, the effect of oil control and acne purification becomes more obvious, and the skin irritation may also increase, and it is not suitable for those with strong non-tolerance.

When preparing, it is especially important to choose the medium. Water-based medium is conducive to the uniform dispersion of glycolic acid, but the solubility of salicylic acid may be affected. Oily medium, salicylic acid is easy to dissolve, but it may affect the activity of glycolic acid. Therefore, the liquid mixed with alcohol and water is often used as the medium to balance the properties of the two and maintain its activity and stability.

And the preservation after preparation is also important. It should be placed in a cool and dark place to avoid high temperature and strong light, and the anti-acid agent should be deteriorated and inactivated. When using it, try it before a small area of skin to see if there is any discomfort, such as redness, itching, tingling, etc. If there is no abnormality, the area of use can be gradually expanded.

In short, the preparation of glycolic acid and salicylic acid must specify its properties, carefully control the ratio, carefully select the medium, store it well, and try it carefully, so as to achieve the good effect of skin beauty and avoid skin damage.