First of all, learn about a cosmetic through the ingredient list.
1. There are two important "references" in any regular total ingredient list, namely, antiseptic component and colloidal component, and the concentration of these two components in the formula will never exceed 1-2%, so it can be used as a criterion for judging the content of effective components.
2. If the ingredients extracted from plants in a product rank behind preservatives and gums such as carbomer, xanthan gum and phenoxyethanol, its function can be basically ignored, because the contents of the ingredient list are arranged from high to low, which can be understood as a propaganda concept or a gimmick.
On the contrary, if the position of plant extracts in the ingredient list is far ahead of preservatives and gums, skin care products with this concentration of plant extracts can basically play the role of skin care required by the ingredients themselves. But some ingredients, such as hyaluronic acid, are not as much as possible. The more, the easier it is to rub mud, so it may be compounded with ethanol.
2. Cosmetic ingredients with corresponding functions
1. Select the ingredients that should be included in the ingredient list of moisturizing cosmetics.
Hyaluronic acid, tremella extract, polyglutamic acid, glycerin, butanediol, ceramide, shea butter, mineral oil (high purity), allantoin, mineral elements, etc.
2. Choose the ingredients that should be included in the ingredients list of whitening cosmetics.
Ascorbic acid and its derivatives, nicotinamide, kojic acid, tranexamic acid, Glycyrrhiza glabra extract, arbutin, 377 new skin white (international patent component), etc.
3. Choose the ingredients that should be included in the ingredient list of anti-aging cosmetics.
Retinol and its derivatives, nicotinamide, peptide, amino acid peptide, boson, ceramide, soybean isoflavone, phenol, etc.
4. Choose the ingredients that should be included in the ingredient list of acne cosmetics.
Hydroxy acid, salicylic acid, octyl salicylic acid, benzoyl peroxide, rhododendron acid, octyl gluconate, nicotinamide, white willow bark extract, etc.
5. Choose the ingredients that should be included in the soothing cosmetic ingredient list.
Asiaticoside, ceramide, myrrh, lecithin, shea butter, chamomile extract, aloe juice, sterol, arhat, Kharkov, etc.
3. Common ingredients in cosmetics that may cause skin discomfort
1, spices
Benzyl salicylate, synthetic jasmine, cinnamyl alcohol, hydroxy citral, eugenol, Peruvian sesame oil, spice mixture, lavender oil, peppermint oil, wintergreen oil, etc.
2, preservatives
Methyl nipagin, ethyl nipagin, propyl nipagin, imidazolidinyl urea, Carson CG, quaternary ammonium salt 15, etc.
3. Pigment
P-phenylenediamine, phenylenediamine derivatives, Lisu red, fast yellow G, erythrosine, quinoline, acridine, etc.
Extended data:
Matters needing attention in choosing cosmetic raw materials
1, universality: As mentioned above, there are more and more raw materials, so it should be said that all substances that can clean, protect, nourish, treat and beautify human skin, hair, nails and other external organs can be selected.
2. Effectiveness: The selected raw materials should play an effective role in cosmetics.
3. Targeted: There are many kinds of cosmetics, and raw materials should be selected according to the final effect of cosmetics.
4. Compatibility: Cosmetics itself is a complex multi-component system, which requires raw materials to have good compatibility in the compound system, thus ensuring the stability of the physical and chemical system.
5. Particularity of raw materials: Some cosmetics have special functions and curative effects. They are realized by adding raw materials with special effects and need to be selected according to special functions.
6. timeliness of raw materials: cosmetics are not only daily necessities, but also consumer goods that conform to the trend of the times. It is required that the raw materials of cosmetics should be constantly innovated, and the selection of raw materials should also be characterized by the times, trends and high-tech content.
Baidu encyclopedia-cosmetic raw materials