SERUM C is designed to work on improving existing sun damage,
therefore, prevention of further damage is best so sunblock
is highly recommended in order that further premature aging
be avoided. SERUM C may be used with alpha hydroxy acids,
glycolic acids, or Retin A. However, unless specified, it
is recommended that SERUM C be applied at opposite times
of the day when using the products listed, due to their
exfoliating qualities.
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