Tretinoin and Glycolic Acid have their own advantages and disadvantages, so it is difficult to simply determine which is better or worse.

Retinoic acid, in the field of skin care, can deeply affect the metabolism of skin cells. It can accelerate the renewal of keratinocytes, promote the shedding of old and waste stratum corneum, and then make the skin surface smoother and more delicate. At the same time, retinoic acid is effective in regulating the keratinization of hair follicles and improving hair follicle blockage, so it is often used to deal with skin problems such as acne. Long-term use, retinoic acid can also stimulate collagen synthesis, enhance skin elasticity, reduce wrinkle formation, and perform prominently in anti-aging skin. However, retinoic acid has a certain degree of irritation. First-time users' skin is prone to redness, desquamation, and tightness, and the skin is more sensitive to ultraviolet rays during use. Strict sun protection measures are required.

Glycolic acid is a fruit acid with small molecules and can easily penetrate the surface of the skin. It mainly reduces the adhesion between keratinocytes, gently exfoliates the exfoliation, effectively improves the rough and dull condition of the skin, and brightens the complexion. Glycolic acid can also promote the metabolism of the skin and make the skin glow. Compared with retinoic acid, glycolic acid is relatively weak in irritation and is suitable for a wider range of people. However, high concentrations of glycolic acid may still cause irritation to some sensitive skin, and it is also necessary to pay attention to skin tolerance when using it.

If someone is suffering from acne and acne, and the skin is well tolerated, retinoic acid may be a better choice; while if you only want to improve the dullness and roughness of the skin and pursue a gentle skin rejuvenation effect, glycolic acid is a good choice. In short, before choosing, you should fully consider your own skin characteristics and specific needs, and consult a professional dermatologist for advice if necessary to achieve the ideal skin care effect.