Lemon is safe in food amounts and may be safe in higher medicinal amounts. The side effects of higher amounts of lemon are not known.
Applying lemon to the sunburn, especially in light-skinned people.
Special Precautions & Warnings:
breast-feeding women when used as part of a normal diet. But it's not known whether it's safe to use lemon in larger medicinal amounts during pregnancy or breast-feeding. Stick to food amounts.