- Aluminum chloride hexahydrate - Category C (FDA);
- Benzoyl peroxide - Category C (FDA);
- Chemical sunscreens - skin lightener hydroquinone;
- Essential oils;
- Formaldehyde;
- Hair dye;
- Hydroquinone - Category C (FDA);
- Hydroxy Acids: Salicylic acid, BHA, AHA, Citric acid - Category C (FDA);
- Retinoids: Retin-A, Renova, Retinol, Retinyl palmitate, Retinyl linoleate, Retinoic acid, Panretin, Differin, Targretin gel - Category C (FDA);
- Steroids - hydrocortisone;
- Tazorac (Tazarotene), Accutane - vitamin A derivatives - Category X (FDA);
