No product is without its downsides. Hair removal creams contain harsh chemicals. It's possible for skin to get irritated, burn or have an allergic reaction. Your skin contains keratin just like your hair does, so those chemicals can target the wrong area.
Worst case scenarios include burns, blisters, rashes, stinging sensations and skin peeling [source: U.S. Food and Drug Administration]. Test a product on a small area of skin before slathering it everywhere. If you see redness or itch, throw it out, wash your skin thoroughly, and try something else.