Uses : Are used to protect the skin from the harmful effects of the sun. They help to prevent sunburn and premature aging (such as wrinkles, leathery skin).Side Effects : Reactions and irritations to vitamin C can occur if you have allergies or sensitive skin.When not to use : It is contraindicated in patients with known hypersensitivity to the drug.Precaution : Avoid contact with skin and eyes. Advice on general occupational hygiene When using do not eat, drink or smoke.Precaution : If you have any of the following health problems, consult your doctor or pharmacist before using this product: skin cuts/infections/sores.