Put a small amount in a spoon and heat it with an alcohol lamp or candle. The product that meets the standard will resemble the state formed by boiling milk, with the flavor unchanged and more intense.
If there is spatter, smoke, a choking taste, and residual oil at the bottom of the scoop after burning, it means that the mineral oil exceeds the standard or there is boride filling.
Pour the appropriate emulsion into the water, such as the emulsion floating on the edge of the water, to prove that the inside contains oilstone ester, and then gently shake, if the liquid becomes milky white, that the emulsion contains emulsifier, emulsifier is a kind of surfactant, they will destroy the tissue structure of the skin, lead to skin sensitivity, and have a strong carcinogenicity.
On the contrary, if poured in the water, the emulsion sinks to the bottom, the proof does not contain oilstone ester, consumers can be safe to use.
At the time of purchase, smear the lipstick sample on the back of your hand and rub it with silver. Observe the color change of the lipstick as you rub it. The darker the lipstick, the more lead it contains.
With transparent glass poured some water, and in the water drops into the tincture of iodine, iodine and the water ratio is about 1:50, shake well, the need to test products such as toner, put a few among them, fully stirring, if the product and liquid fully dissolved and restored the crystal clear water, its antioxidant function, if the water can’t restore or darkened,
It proves that such skin will continue to be oxidized by the air, and in severe cases, it will aggravate the oxidation.
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