Glycolic acid and tretinoin are quite widely used in skin beauty, why should I pull them together to compare? Because these two acids are different in many places, they also have similarities. Sometimes, when we use them together, we will achieve better results in clinical skin beauty treatment.
Glycolic Acid
Glycolic acid is a fruit acid derived from sugar cane, and the domestic standard cosmetic ingredient is called "glycolic acid". It is a very safe, effective and widely used fruit acid in the cosmetic industry.
It is the smallest molecular weight fruit acid (alpha-hydroxy acid) with a molecular weight of 76.05. Due to its small molecular weight and light body bones, this acid can easily penetrate through the epidermis to the dermis layer, thus having a strong epidermis-dermis effect.
It is the most common effective acid ingredient in beauty and skin care products, and it is found in many famous international cosmetics. Glycolic acid can also destroy the desmosomes of epidermal keratinocytes, or in general, it weakens the connection between cells, and promotes the release and shedding of epidermal keratinocytes, promoting new cells to replace old old cells, so as to achieve skin rejuvenation. Skin rejuvenation, lightening dark spots, lightening dull complexion and beautifying effect. Glycolic acid can also help the keratinocytes around the hair follicles to loosen and fall off.
Main effect
1. Stimulate the proliferation of collagen and collagen fibers;
2. Stimulate the secretion of hyaluronic acid and interstitial cells, lock water and moisturizing;
3. Reduce skin aging, dilute wrinkles, tighten and improve skin;
4. Improve photoaging skin texture;
5. Treat hyperpigmentation;
6. Unclog pores, treat blackheads, whiteheads
Retinoic acid
This acid is a derivative of vitamin A and plays a very important role in the growth and division of the skin. It is a component of skin keratinocytes, dermal fibroblasts, and melanin formation. Therefore, tretinoin can treat and repair photoaging skin, treat moderate to severe acne, stimulate collagen regeneration, lighten pigment and have certain anti-inflammatory effects.
Main effect
1. acne treatment;
2. Repair photoaging skin;
3. Regulate and inhibit pigment production;
4. Anti-inflammatory;
5. Stimulate collagen proliferation;
6. Improve keratosis pilaris.
Concentration and Application Tips
Regardless of any fruit acid or vitamin A acid, it has a certain stimulating effect on the skin, and its usage and concentration are directly related. The glycolic acid skin care products that we can use every day are generally at a low concentration of 5%-10%. As long as the skin tolerates it, it can be used for a long time to achieve long-term whitening, lifting, shrinking pores, and oil control. Glycolic acid with a high concentration of 30% belongs to the category of professional lines. It requires a doctor or a qualified operator to perform "acid brushing" treatment. After 2-3 minutes on the face, a certain "exfoliation effect" can be achieved. Acid peeling, we will explain and discuss it separately. The concentration of tretinoin needs to be strictly controlled, because its effect is really strong. Generally speaking, the content of professional line products is controlled in the range of 0.05%-0.1%.
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