How can Winona Shu Min Moisturizing Lotion tell the truth from the false?

Pick up the toner bottle, shake it vigorously, and distinguish it according to the bubble situation:

Bubbles are fine and rich, thick, and will last for a long time, that is good water.

② There are many and large bubbles, indicating salicylic acid. Salicylic acid has a good cleansing effect, but it is too irritating. MM allergic to salicylic acid or sensitive to skin should not be used.

③ Less bubbles, indicating less nutrients.

(4) A large number of tiny bubbles appear and then disappear quickly, indicating that there is alcohol. This toner can play an anti-inflammatory role if used occasionally, but don't use it for a long time, which will easily damage the protective film of the skin.

Note that if that bottle of toner is opaque, never buy it. Because you can't identify it, unless you have used it, that's another matter.