Pigment changes (light or dark spots on the skin) lasting 1 – 6 months. Freckles may temporarily or permanently disappear in treated areas. Other potential risk includes crusting, itching, pain, bruising, pimple-like bumps, dry skin, hypopigmentation (lightening of the skin), hyperpigmentation (darkening of the skin), blistering, burns, infection, scabbing, swelling, a very small risk of scarring and a failure to achieve the desired result.*