| Substance/Test | Methods |
|---|---|
| alpha-Hydroxy Acid | HPLC |
| Benzocaine | HPLC |
| Benzoyl Peroxide | HPLC, GC |
| Butylene Glycol | GC |
| Capsaicin | HPLC |
| Caprylyl Glycol | GC |
| Cetyl Alcohol (Fatty Alcohol) | GC |
| Diethylene Glycol | GC |
| Dihydroxyacetone | HPLC |
| Dimethicone/cyclomethicone | USP |
| DHEA | GC |
| Ecdysterones | HPLC, GC |
| Ethyl Alcohol | GC |
| Glycerin and glycerides | HPLC, GC |
| Glycholic Acid, Cholic Acid, Deoxycholic Acid | HPLC |
| Hydrocortisone | USP/HPLC |
| Hydroquinone | HPLC |
| Isopropy Lanolate | GC |
| Isopropy Myristolate | GC |
| Isopropyl Palmitate | GC |
| Lanolin/Lanolin Alcohols | GC |
| Lactic Acid | HPLC |
| Lidocaine | HPLC/USP |
| Malic, Citric, or Tararic | HPLC |
| Methyl Salicylate | HPLC, GC |
| Methylsulfonylmethane (MSM) | GC |
| Oleic Acid (Olive Oil) | GC |
| Octyl Palmitate | GC |
| Octylmethoxycinnamate | GC |
| Oleanolic Acid/Ursolic Acid | HPLC |
| Oxybenzone | GC |
| Panthenol | HPLC |
| Polysorbate 40, 60, & 80 | HPLC |
| Pregnenolone or Progesterone | GC, HPLC |
| Salicylic Acid | HPLC or GC |
| Sodium Lauryl Sulfate | HPLC |
| Stearic Acid/Stearyl Alcohol | GC |
| Tetracaine | HPLC/USP |
| Thymol | HPLC, GC |