Appropriate Use
Allergies & Patch Tests
- Can I switch to another hair color product after experiencing a reaction to hair dye?
- I have sensitive skin. Can I use hair color products?
- Do I have to do the Allergy Patch Test every time I color my hair?
- Can I take a shower or bathe during the 48 hour patch test?
- What is a skin allergy patch test, and how do I do it?