Are all sunscreens of an equal SPF value equal?
No. Sunscreens vary in the way they protect from the sun. There are physical sunscreens, chemical sunscreens, UVB absorbing sunscreens, UBA absorbing sunscreens and combination sunscreens. They differ not only in the agents used to block the sun but also in the vehicles used to deliver the active ingredients. Sunscreens come in different formulations such as lotions, creams, oils, gels and sticks. Not every formulation is suitable for a given person. Typically the higher SPF agents feel greasier and more opaque.
