| http://www.w3.org/ns/prov#value | - She cites three key steps to slowing down the aging process: use a well-manufactured topical vitamin C serum (an anti-oxidant), apply a zinc or titanium-based sunscreen (90 percent are chemical-based, which she says can cause a chemical reaction that damages skin further) and a topical retinoid such as retinol or Retin-A.
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