
Developing A Base Tan
Before going on a trip, remember that it’s important to
develop a base tan and schedule enough time to develop it gradually. Moderate
exposure to ultraviolet light helps develop a natural barrier in the skin to
protect the body from future exposures to UV light. It increases a person’s tolerance to UV.
Ultraviolet light stimulates the production of melanin, which
then surrounds the core of cells to protect the DNA. This melanin substance
absorbs and/or scatters radiation. In addition, exposure to ultraviolet light
thickens the epidermis (the top skin layer), thereby limiting the amount of UV
that could penetrate the lower skin layers.
If this photo-protection (base tan) is not developed or a
sunscreen is not used, sunburn can occur and the DNA of skin cells may become
damaged. Repeated sunburn can result in damaged cells.
Therefore, it’s wise to use a broadband sunscreen while
exposed over a prolonged period of time or in sun-intensive regions.
Skin damage may occur if a person overexposes skin to UV or
combines exposure indoors with too much exposure to the natural sun. One always
should be mindful of the dangers of overexposure, as it may lead to chronic skin
damage.
Maintaining A Tan
A tan will disappear or fade over time without repeated
exposure to UV light. This is because the pigmentation process occurs in the
epidermis, the top skin layer. The epidermis replaces all of its skin cells
every 28 to 30 days. Cells in the inner portion of the top skin layer divide
themselves, migrate to the surface, gradually die and slough off.
Skin cells contain melanin that is darkened as a result of UV
exposure. If a person stops tanning for an extended period of time, he or she
probably will have to start at the beginning, using the recommended exposure
schedule for his or her skin type. Subsequent session times may be gradually
increased, leaving at least 48 hours between each exposure. This schedule
assumes, however, that no unusual reaction or sunburn occurs.
If you decide to use a spray booth or self-bronzer for that
immediate tanned look, remember that these sources do not provide a natural
barrier or photo-protection and will leave a person susceptible to obtaining a
sunburn when going outside or being overexposed to UV light.
Moderation is the key, and always use an SPF when outside for
extended periods of time.
If you have a question
that you would like answered, please e-mail sales@wolffsys.com or visit
www.wolffsystem.com.
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