It will take between 8 weeks and 4 months for you to see the benefits of the treatment. You should stop using Vaniqa if you see no results after 4 months.
Vaniqa contains the active ingredient eflornithine, which penetrates to the base of the hair follicle. It reduces new growth by acting on an enzyme that plays a part in hair growth.
Side effects are uncommon and usually mild. Sometimes Vaniqa can cause stinging of the skin, tingling, soreness, and redness. Acne is a less common side effect. It is unusual for treatment to be discontinued because of these side effects.