Lemon juice has some bleaching properties and can lighten dark spots on the skin. The effect is temporary, and the lemon juice must be applied regularly. Fading dark spots with lemon juice is a gradual process that takes several months.
Because the bleaching effect of lemon juice on the skin is mild and gradual, avoiding exposure to sunlight is an important part of the treatment. Direct sunlight causes freckles and other dark spots to reappear, even with the regular application of lemon juice. For stubborn dark spots or a longer-term solution, permanent bleaching options such as laser treatments are necessary.