Aging causes the skin to undergo changes: 1  Cells divide more slowly and the inner layer of skin starts to thin. 2  The deeper layer of the skin, which provides the framework for the surface skin layers, loosens and unravels. 3  Oil-secreting glands shrink, leaving the skin without a protective layer of oil.
Money. Cuba operates a dual currency system. Visitors usually use the Cuban Convertible Peso (CUC), whereas locals use the Cuban Peso (CUP). The CUP is worth much less than the CUC; check transaction sums carefully. US Dollars arenât accepted as legal tender; youâll be charged 10% commission to exchange them.
1 Exchanging travellers cheques to CUC. 2  See below for details. 3  Providing cash advances with credit cards (Visa and MasterCard). 4  These are widely accepted throughout Cuba and are valid from accounts in every currency, except for cards linked to banks in the U.S..