Guidelines to choose right sunscreen:
– Choose a sunscreen that has an SPF of at least 15. If you’re going to be in the sun longer than two hours, choose one with SPF 30.
– Pick a broad-spectrum sunscreen, i.e., one that protects against UVA (skin-aging) and UVB (skin-burning) rays.
– Use a water-based sunscreen if you have oily or acne-prone skin.
– Use waterproof sunscreen if you’re going swimming. Remember, the term ‘waterproof sunscreen’ actually means that it is effective for 40-80 minutes of swimming, so you will have to reapply it if you’re in the water for a long time.
– Not all sunscreens have the same ingredients, so if you have an allergic reaction to the one you are using, choose another with different ingredients.
– Sunscreens with certain ingredients — such as oxybenzone, retinyl palmitate and parabens — should be avoided as they are potentially carcinogenic.