If you want one product, choose by what bothers you: the Vitamin C Serum in the morning for dullness and uneven tone, the Overnight Retinol Serum at night for texture and fine lines. Add the Foam Cleanser so either goes onto clean skin. The full ritual is four.

Morning: Foam Cleanser, Vitamin C Serum, Replenishing Moisturizer, then sunscreen. Night: Foam Cleanser, Overnight Retinol Serum, and the Moisturizer if skin feels dry.

Yes, on the same day, not in the same application: vitamin C in the morning, retinol at night.

Vitamin C, four to eight weeks. Retinol, eight to twelve. Give it eight weeks before you judge it; our returns are sixty days for that reason.

All of them. Retinol, vitamin C and niacinamide matter most where skin tends to mark and darken. If your skin is sensitive or reactive, patch-test first.

The Cleanser, the Moisturizer and the Retinol Serum contain a small amount of fragrance. The Vitamin C Serum has none; what you smell is the botanical waters. The full ingredient list is on every box and every product page.

The first ingredient in all four formulas: water that has sat in Northern European bogs, gathering humic acids and minerals. It is the color of strong tea.

Because of the peat water, not because the vitamin C has oxidized. We use a stable form, sodium ascorbyl phosphate, that does not turn orange in the bottle.

0.2% retinol with 1% bakuchiol, in an airless pump.

The Overnight Retinol Serum contains vitamin A; talk to your doctor before using it. Ask about the other three too if you are under any medical treatment.

Yes, every morning, and especially while you use retinol.

Some dryness in the first weeks is common. Start two or three nights a week, put the Moisturizer on top, and build up to nightly.

They are made in the EU, where testing cosmetics on animals has been banned since 2013.

In the EU, in small batches, lab-tested before they ship, and shipped from inside the US. Unopened, they keep 24 months; the date is on the box.

United States only, shipped from inside the US, so no customs. Standard $5.95, three to five business days, free over $75. Expedited $14.95, one to two days. Orders leave within one to two business days.

Yes. Sixty days from delivery, opened or not. Email us your order number and one line on what didn't work; no photos, no forms. Keep the product. Once per product per customer; refund within ten business days.

Write to us within 14 days of the expected delivery date with your order number and a photo. We replace or refund.

No, never. The price you see is the price it is. The newsletter is for launches and restocks, not discounts.