(…) uncontrolled sun exposure can become dangerous, and it is important to find means to protect one’s skin and enjoy its many positive effects instead.

Today, fortunately, knowledge of the mechanisms by which the sun’s rays interact with the skin, and even the hair, as well as what improper photoexposure can do to human health, are common acquisitions.

Research over the past century has focused on the production of photoprotective substances that perform increasingly well in terms of both safety and tolerability. In principle, as is well known, such preparations act by reflecting or absorbing UVA and UVB solar radiation, and their degree of effectiveness is measured according to the known SPF value (…)

(…) When we talk about photoprotection, in fact, the common understanding is that we should mostly protect the trunk, limbs, and face, but few reflect on how important it is to protect the scalp as well, which, in fact, is the part of the body that receives the greatest amount of sunlight. In the trichological patient, indiscriminate action of the sun’s rays can lead to to the aggravation of an already present alopecia, generating situations of actinic telogen effluvium and delayed return to anagen of the follicles. (…)