On whether fruit acid needs to be washed
The use of fruit acid in skin care is becoming more and more popular, but people have doubts about whether it needs to be washed after use.

In other words, fruit acid is unique and cannot be washed after use. Because of the moderate concentration of fruit acid, the skin can slowly absorb it, and it plays a fine-tuning role in the stratum corneum. If it is not washed, its effect can be maintained. For example, when skin care at night, after applying fruit acid products to sleep, the skin can fully benefit from night, and the keratin is renewed and the texture is improved, so that the skin gradually appears tender.

However, it is also argued that fruit acid needs to be washed. High-concentration fruit acid is highly irritating. If it is not washed, it will remain on the skin, or cause discomfort, such as redness, tingling, and even allergies. Especially for sensitive skin, the epidermis is thin and the tolerance is weak, and the retention of fruit acid is easy to cause overreaction. That is, for normal skin, long-term fruit acid retains the skin, or disrupts the acid-base balance of the skin and damages the skin barrier.

Therefore, whether the fruit acid is washed after use depends on the concentration and skin condition. Low-concentration fruit acid, skin with good tolerance, may not be washed; high-concentration fruit acid or sensitive skin, it is appropriate to wash after use, and it is appropriate to use soothing and moisturizing products for subsequent care to maintain skin health.