What are the precautions for aspirin whitening?

Skin whitening seems to be an eternal topic for female friends. With the development of society, people's demand for beauty is getting higher and higher. Now skin whitening is not only a topic for women, but also a subject pursued by male friends. There are many ways to whiten skin, but not all of them are effective. Many friends have heard of aspirin whitening, but many people are skeptical and don't know whether aspirin can really whiten skin.

1. Does aspirin whiten your skin?

Hot beauty post: "Aspirin is available in all major pharmacies. Crush it and put it in toner, then apply it directly to your face or use a facial mask. Apply it for 15 minutes, massage for 5 minutes, and rinse it off. After using it, real people's skin immediately became smooth and delicate, their complexion became brighter, and even the black acne marks were much lighter."

2. Aspirin whitening is too irritating

A netizen who dared to try it revealed: "Two years ago, I used aspirin for whitening for a period of time. I felt good on the first day and my skin did become very smooth. But after using it for a week, my face started to turn red and there was a burning sensation. I was worried about burning my skin, so I didn't dare to continue."

3. Aspirin contains salicylic acid

1. Dermatologist: "Aspirin has whitening effects, but there is no precedent for clinical trials. The misunderstanding may be due to the fact that aspirin dissolved in water contains salicylic acid."

2. Popular science knowledge: Aspirin, also known as acetylsalicylic acid, is stable in a dry environment, but once it is exposed to moisture, it will slowly decompose into salicylic acid and acetic acid.

3. Dermatologist: "In clinical trials, salicylic acid is usually used to treat fungal dermatitis, because fungi like to live in the stratum corneum, and salicylic acid can cause the stratum corneum to peel off, thereby achieving a sterilization effect." Therefore, salicylic acid is used in skin care products to achieve the effect of tightening pores and removing dead skin.

4. Direct use will damage the skin's natural barrier

Too high a concentration of salicylic acid will damage the surface of the skin, but too low a concentration will not be effective. Experiments have shown that salicylic acid concentrations above 6% can already cause damage to skin tissue. Salicylic acid at a concentration of 20% to 40% can be called a high-strength acid and is severely corrosive to the skin.

Although salicylic acid has a strong exfoliating effect, the human body's cell metabolism cycle is 28 days. Although metabolic waste in the stratum corneum is produced every day, exfoliation once a week is sufficient. Exfoliating every day will only weaken the skin's natural protective film, destroy the skin's water-oil ratio, and corrode the skin, causing erythema, itching, stinging, etc.

5. Tips

It is difficult to say how much salicylic acid will be contained in the dissolved aspirin, because different brands of aspirin have different content of salicylic acid. Therefore, applying aspirin directly on the face for a long time will only damage the skin.