Iused crest white strips eventho i was very lazy and inconsistent with it but i still saw a big diference. now i still have a bunch left almost two years later, are they safe to use? =/
Haha.. 2 years? I'd suggest you trash it!:p
Iused crest white strips eventho i was very lazy and inconsistent with it but i still saw a big diference. now i still have a bunch left almost two years later, are they safe to use? =/
Haha.. 2 years? I'd suggest you trash it!:p