Our Formulas

Five ingredients or fewer. Every ingredient named. Every ingredient justified.

Most skincare formulas contain 20–40 ingredients. Preservative systems, fragrance compounds, thickeners, emollients, chelating agents, stabilizers — each one an additional variable for reactive skin to respond to.

Derrin's constraint is absolute: five ingredients or fewer per product. No exceptions. Not because fewer is marketing — because for sensitive and seborrheic-dermatitis-prone skin, elimination is diagnosis. If you can't react to it, it can't cause a reaction.

Barrier Cleanser **Aqua · Glycerin · Sodium Cocoyl Glycinate · Panthenol · Allantoin**

A pH-balanced foam cleanser. The surfactant, Sodium Cocoyl Glycinate, is a coconut-derived amino acid surfactant with a skin-neutral pH of 5.5–6.5 — it does not strip the acid mantle the way SLS and SLES do. Panthenol (pro-vitamin B5) supports barrier repair during cleansing. Allantoin calms post-cleanse sensitivity.

No fragrance. No essential oils. No sulfates.

Barrier Moisturizer **Aqua · Squalane · Glycerin · Cetearyl Alcohol · Sodium Hyaluronate**

A barrier-repair moisturizer without heavy occlusives and without fatty acids that can feed Malassezia folliculitis — making it safe for seborrheic dermatitis. Squalane is phytogenic (derived from sugarcane), non-comedogenic, and confirmed Malassezia-safe in peer-reviewed literature. Sodium Hyaluronate at low molecular weight penetrates to the dermis. Cetearyl Alcohol is a fatty alcohol emulsifier (not an irritating ethanol).

No lanolin. No coconut oil. No esters that feed fungal overgrowth.

Mineral SPF Serum **Aqua · Zinc Oxide 18% · Dimethicone · Glycerin · Caprylic/Capric Triglyceride**

Mineral-only, broad-spectrum SPF 30. No oxybenzone, no avobenzone, no octinoxate — the chemical filters responsible for the majority of sunscreen contact dermatitis. 18% zinc oxide covers both UVA and UVB without chemical activation. Dimethicone is the key texture ingredient — it suspends zinc oxide in a silicone matrix that prevents the white-cast problem typical of high-zinc formulas. Caprylic/Capric Triglyceride is the Malassezia-safe fraction of fractionated coconut oil.

No chemical UV filters. No fragrance. No octocrylene.

Contract-manufactured by Nox Bellow Labs

All three formulas are manufactured by Nox Bellow Labs in New Jersey under pharmaceutical-grade stability testing. Each batch is stability-tested for 24 months in the refill pouch format. The five-ingredient constraint exists at the manufacturing level — not as a post-hoc marketing claim.