What does the Duo Serum Program include?

It is a two-part serum routine: a renewing serum plus a second serum step for firming and hydration. Use them in the order the program directs.

Is it suitable for sensitive skin?

The renewing step is the one to watch. Patch test first and start every other night before moving to daily use.

A single serum usually does one job. This program splits renewal and firming across two steps, which suits shoppers who want both.

Hydration and smoothness are usually noticed within weeks. Firmness and tone changes take longer, so judge it over a full routine cycle.

Introduce one renewing product at a time. If you already use retinol or exfoliating acids, alternate rather than layer them on the same night.

At MARYLIS MARKET, for $78.14, as of our latest check.

$78.14at MARYLIS MARKETChecked Nov 10

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