A7. It is undeniable that lemon contains a high amount of Vitamin C, which is an effective whitening ingredient. However, lemon’s citric acid is quite an irritating acid for the skin. When combined with sun exposure, it can cause a type of phytophotodermatitis, a plant-induced sun sensitivity dermatitis, which can lead to skin darkening instead of lightening. In this case, consumers may end up causing more harm than good.
