Cov khoom xyaw hauv tes cream thiab cov tshuaj pleev ib ce ntawm cov tawv nqaij yog qhov zoo sib xws; Lawv tuaj yeem muab faib ua plaub pawg loj: aqueous-theem cov khoom xyaw, roj-theem cov khoom xyaw, emulsifiers, thiab lwm yam khoom xyaw.
Roj- Cov khoom xyaw theem
1. Hydrocarbons: Squalane, ntxhia roj, petrolatum, paraffin ciab, thiab lwm yam.
2. Natural Oils/Fats: Txiv roj roj, avocado roj, almond roj, apricot kernel roj, pob kws roj, hom qoob mog roj, yav tsaus ntuj primrose roj, thiab lwm yam.
3. Cov Fatty Acids: Stearic acid, palmitic acid, lauric acid, myristic acid, oleic acid, isostearic acid, isostearyl cawv, thiab lwm yam.
4. Cov dej cawv ntau dua: Cetyl cawv, stearyl cawv, cetearyl cawv, oleyl cawv, cholesterol, thiab lwm yam.
Lub luag haujlwm tseem ceeb ntawm plaub pawg ntawm cov khoom xyaw saum toj no yog txhawm rau muab softness thiab lubrication rau ntawm daim tawv nqaij; los pab txhawb cov tawv nqaij nqus cov tshuaj thiab cov khoom xyaw nquag; los ua ib tug hydrophobic roj zaj duab xis; kom moisturize ntawm daim tawv nqaij; inhibit noo noo evaporation; txo kev sib txhuam; txhim khu daim tawv nqaij luster; thiab pab ntxuav cov tawv nqaij.
5. Waxes: Beeswax, lanolin, carnauba wax, candelilla wax, jojoba wax, paraffin wax, microcrystalline wax, thiab lwm yam.
Cov khoom xyaw siv quav ciab feem ntau yog cov khoom ua kom muaj zog los txhim kho cov khoom ruaj khov; muab cov khoom rheological thiab cov teebmeem thixotropic; txhawm rau txhim kho kev paub txog kev hnov lus thiab cov teebmeem emollient; nce lub melting point ntawm cov roj theem; los txhawb cov yeeb yaj kiab hydrophobic ntawm daim tawv nqaij; thiab muab cov khoom glossy tiav.
6. Synthetic Esters: IPM (Isopropyl Myristate), IPP (Isopropyl Palmitate), Caprylic / Capric Triglyceride, Isostearyl Neopentanoate, Pentaerythrityl Tetraisostearate / Tetracaprate / Tetracaprylate, Oxalates, Pentaerythrityl Stearate, thiab lwm yam.
Synthetic esters feem ntau ua haujlwm raws li emollients, txhim kho cov khoom sib kis, lubricity, moisturizing muaj peev xwm, thiab ua pa; lawv kuj pab ua kom ntub dej thiab tawg ntawm cov hmoov thiab cov pigments, ua cov kuab tshuaj rau cov roj- cov khoom soluble thiab cov quav ciab, thiab txhim kho cov tawv nqaij tag nrho ntawm cov khoom.
7. Lwm tus: Dimethicone, Cyclopentasiloxane, Cyclomethicone, thiab lwm yam.
Aqueous Phase Cov khoom xyaw
1. Humectants: Glycerin, Propylene Glycol, 1,3-Butylene Glycol, Polyethylene Glycol, Sorbitol, Dipropylene Glycol thiab nws cov derivatives, Amino Acids, Lactic Acid thiab Sodium Lactate, Sodium PCA, Methyl Gluceths, Panthiven.
Lawv cov haujlwm muaj xws li moisturizing stratum corneum, txhim kho kev hnov lus zoo, thiab solubilizing dej- cov khoom xyaw soluble.
2. Dej-soluble Polymers: Xanthan Gum, Guar Gum thiab nws cov derivatives, Alginates, Hydroxyethyl Cellulose, Carbomer, Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Aluminosilicates, thiab lwm yam.
Lawv ua haujlwm ua co-emulsifiers; muab dispersion thiab ncua kev cuam tshuam los txhim kho stability; tswj rheology; txhim kho kev xav; thiab muab cov txiaj ntsig moisturizing.
3. Dej-soluble Lipids: Ethoxylated Triglycerides, Di-PPG-3 Myristyl Ether Adipate, PEG-40 Castor Roj, PEG-60 Almond Glycerides, PEG-42 Babassu Glycerides, thiab lwm yam.
Lawv ua cov solubilizers thiab co-emulsifiers hauv O/W systems; lawv tswj cov khoom viscosity thiab txhim kho cov khoom ntawm daim tawv nqaij.
4. Tsawg-carbon Cawv: Ethanol, Isopropyl Cawv.
Lawv muaj peev xwm solubilizing lwm cov khoom xyaw thiab tswj viscosity.
5. Dej.
Emulsifiers
Lub luag haujlwm tseem ceeb ntawm emulsifiers yog los pab txhawb lub emulsification ntawm cov tshuaj pleev qhov system thiab kho qhov system tus nqi HLB.
Lwm yam Cheebtsam
1. Alkalies/Bases: Potassium Hydroxide, Sodium Hydroxide, Triethanolamine, Aminomethyl Propanol. (Siv rau kev hloov pH.)
2. Preservatives: Methylparaben thiab Propylparaben, Imidazolidinyl Urea, Polyquaternium-15, Benzoic Acid, thiab lwm yam.
3. Antioxidants: BHT, BHA, -Tocopherol, Ascorbyl Esters, thiab lwm yam. (Inhibit thiab tiv thaiv cov khoom oxidation.)
4. UV Absorbers: Benzophenone-5, Ethylhexyl Methoxycinnamate. (Tshuaj tiv thaiv cov khoom los ntawm UV raug)
5. Chelating Agents: Disodium EDTA
6. Buffering Agents: Citric Acid-Sodium Citrate, Lactic Acid-Sodium Lactate (hloov pH)
7. Cov tshuaj pleev xim
8. Tshuaj tsw qab thiab tshuaj tsw qab
9. Pharmaceutical Agents thiab Active Ingredients