Views: 7 Author: Site Editor Publish Time: 2022-04-15 Origin: Site
Because high concentration of salicylic acid has certain harmfulness, cosmetics containing salicylic acid must be marked with warnings to determine the safety of long-term use, and children under the age of 3 should not use it.
Local effect: excessive removal of stratum corneum will deteriorate the skin's defense, and erythema, pruritus, tingling or allergy may occur. Therefore, the use of salicylic acid needs to strengthen moisturizing and repair, and it is best to avoid contact with eyes, face, reproductive organs and mucous membrane. There are also a few people who are allergic to salicylic acid, so it is not suitable to use any concentration of salicylic acid.
Extensive use of the skin can cause systemic poisoning, manifested as dizziness, confusion, shortness of breath, persistent tinnitus, severe headache, etc.  when contacting or using, pay attention to avoid contact with the mucous membrane of eyes and other parts; Because it can be absorbed through the skin, healthy skin should not be used for a long time to prevent systemic poisoning.
Only dermatologists can operate the skin replacement of fruit acid with a concentration of more than 50%, and the skin replacement of salicylic acid, regardless of the concentration, is classified as medical treatment. It is worth noting that a few people are not suitable for using any concentration of salicylic acid, so the general beauty salon cannot implement it. The skin replacement of fruit acid with a concentration of less than 40% in the beauty salon is allowed by law. In contrast, fruit acid is much safer than salicylic acid. As for the effect, salicylic acid is only locked in the superficial stratum corneum, which only plays the role of simple treatment and blocking, and changing the skin texture is only temporary, while fruit acid enters the dermis to fundamentally change the skin texture, which can be cured. As for the acne pits formed by dermal damage, the role of salicylic acid is powerless, so salicylic acid can not be called "salicylic acid skin replacement", but "salicylic acid treatment". The safety and effect of salicylic acid skin changing is different from that of fruit acid skin changing, because fruit acid is non-toxic and can be used from low to high (8% - 15% - 20% - 30% - 40%). Salicylic acid is toxic, and too high concentration is not suitable for use on the face. There is a certain concentration limit. Salicylic acid with a concentration of 3% - 6% can be used to exfoliate, more than 6% is corrosive to the skin, and 40% of high concentration salicylic acid has strong keratin corrosive properties.