How Derrin Works

The vessel is permanent. The formula is the product.

Most skincare is sold in single-use plastic that goes to landfill when you finish it. Derrin inverts the model: you buy an aluminum vessel once — a precision-machined container you keep on your bathroom shelf indefinitely — and subscribe to refill pouches delivered every 60 days.

The vessel is not a gimmick. It creates a physical anchor for your routine. Unlike a plastic tube you throw away, the aluminum vessel stays. It's the thing that makes the refill ritual feel like maintenance, not repurchase.

Step 1: The Starter Kit

One aluminum vessel per product category — Barrier Cleanser, Barrier Moisturizer, Mineral SPF Serum. Three vessels, three first refill pouches. $89 one-time.

The vessels are dishwasher-safe, drop-resistant, and designed to sit on a shelf for years. They have no expiry. If one gets damaged, a replacement vessel ships for $29.

Step 2: Refills arrive every 60 days

Your refill pouch subscription ships automatically every 60 days: one pouch per product, pre-portioned for the vessel size. Tear open, pour in, done. No measurement, no waste. $48/month for the three-product bundle.

You can pause, swap individual products, or cancel before any shipment. No lock-in.

Step 3: The formula stays the same

Five ingredients or fewer per product. The same five ingredients, every batch. Contract-manufactured by Nox Bellow Labs in New Jersey under pharmaceutical-grade stability testing. Every refill pouch is the same formula, same concentration, same 24-month shelf-stable packaging.

For reactive skin, formula consistency is not a feature — it is the whole point. You learn what your skin tolerates. The formula doesn't change on you.

Dermatologist-sampled

The three Derrin formulas were sampled through dermatology offices specializing in seborrheic dermatitis and reactive skin before launch. The five-ingredient constraint was not a marketing decision — it was a clinical requirement. Every ingredient is present at a justified concentration, and no ingredient is present without a function.