Definition
Dry zones are the body areas where skin tends to be drier than average — knees, elbows, ankles, wrists, the backs of hands and the tops of feet — which absorb self tan more aggressively.
why it matters.
Pre-moisturising only the dry zones is the difference between an even tan and a patchy one. Moisturising the whole body dilutes the tan; moisturising the dry zones balances it.