When buying lipstick, wipe the lipstick samples on their back, then rub with a silver ring on top, edging the lipstick color changes observed, black lipstick lead in plastic jars wholesale lipstick explanation airless pump bottles , deeper black, the greater the amount of lead .
Iodine distinguish antioxidant
Transparent glass pour some water and in the water trickle iodine, iodine and water ratio of about 1:50, shake, the need to test products such as toner, cleanser airless pump bottles , etc. put a little in it, stir If the product is dissolved and the liquid water recovered sufficiently clear and transparent, indicating lipstick case manufacturers its antioxidant function, if the water can not be restored or black, this is proved by the skin care products will continue to be air oxidation, will exacerbate serious oxidation.
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