Your first month with a new serum is a chance to establish a ritual and see how it suits your skin. This guide covers getting started with the 13°S Cellular Serum and what to look for along the way.
Start simply
Keep the rest of your routine familiar while introducing the serum, so you can clearly see how your skin responds to it.
Our ritual is 3 drops morning and evening: one on your forehead and one on each cheek, smoothed over clean skin and followed by moisturiser. The formula is concentrated, so more drops won't speed up results.
How far your bottle goes
At 3 drops morning and night, a 30ml bottle lasts about 3 months, so your first month uses around a third of it.
We make 13°S in small batches because its active botanical ingredients are best used within 6 months. A bottle used as directed is finished well inside that window. When it's finished, the Refill continues your ritual with less packaging.
What to notice
Pay attention to how the serum spreads, how your skin feels afterwards and how it layers with the products you already use. The formula is designed for brightening, hydration and barrier support, and every skin responds at its own pace.
If you'd like to track changes, photographs taken in similar light make the best comparison.
Listen to your skin
Follow the label's precautions and consider your own sensitivities. If irritation occurs, stop using the product and seek advice if it persists.
Your first-month check-in
Ask yourself: does this step fit easily into my day? Does my skin feel comfortable? What changes have I noticed?
A month is a natural time to reflect, and you still have about two months of serum to go.
Keep your routine's roles clear
The serum does not replace moisturiser or sunscreen. Read Serum vs. Moisturiser for how to layer them.
A simple ritual. A considered formula. Time to see what it does for you.
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