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. 2017 Dec 1;10(12):27–35.

TABLE 5.

Onset and duration of continued improvement in skin evaluation parameters with 5 topical test products

PARAMETER DAY FACIAL CREAM NIGHT FACIAL CREAM EYE CREAM DAY LIP CREAM NIGHT LIP CREAM
Onset
SELS 15 minutes 15 minutes 15 minutes 15 minutes 15 minutes
TEWL 28 days 15 minutes 14 days
EC 15 minutes 15 minutes 15 minutes 15 minutes 15 minutes
Duration
SELS 56 days 56 days 56 days 56 days 56 days
TEWL 56 days 56 days 56 days
EC 56 days 56 days 56 days 56 days 56 days

SELS: surface evaluation of living skin; TWEL: transepidermal water loss; EC: electroconductivity