The Science

Born at -430m.

430 is not a number. It's a depth. -430 metres below sea level — the lowest point on Earth, where the Dead Sea holds one of the highest natural concentrations of skin-essential minerals on the planet.

From the source to the skin

We extract the mineral wealth of the Dead Sea, purify it to its cleanest, most stable form, and stabilise it with active ingredients of the highest grade. The result is biomineral skincare: the intelligence of the Dead Sea, calibrated for performance.

Why Dead Sea minerals

The Dead Sea is unusually rich in magnesium, calcium, potassium and bromide. Magnesium in particular is associated with supporting the skin's barrier and comfort. We pair these minerals with proven actives — hyaluronic acid for hydration, niacinamide for tone and texture, vitamin C for clarity — so each formula works on more than one level.

Honest about the evidence

We believe in saying exactly what's known. Ingredients like hyaluronic acid and niacinamide are well-studied and widely supported in dermatological literature. Others — such as topical caffeine and rosemary for the scalp — are backed by promising but still emerging research. We'll never overstate what a formula can do, and our products are cosmetics, not medicines: they are not intended to diagnose, treat or cure any condition.

Our standard

Every formula is built on considered concentrations, clean stabilisation, and respect for the skin barrier. We recommend a 24-hour patch test before first use, and give clear guidance on every product page for how — and how often — to use each one.

The lowest point on Earth. The highest standard in self-care.

The Origin

The Jordan Valley sits at the lowest point on the surface of the earth. The air is denser here, the light arrives filtered, and the water holds one of the highest mineral concentrations found anywhere on the planet. It is an extreme place — and extremity is exactly what skin responds to.

The Purpose

FourThirty was built on a simple refusal: nothing in the bottle for show. We take the purest forms of Dead Sea minerals and pair them with bio-active ingredients chosen for what they actually do — then we stop. No filler claims, no inflated routines, no fluff. Every formula has to earn its place by results alone.

The Promise

We call it a commitment. You can call it the standard, raised.

−430m below sea level. Above the standard.