4 in 1 Serum - 30mL

$115.00

Includes one bottle

Includes free shipping

Secure checkout Ships same day (M–TH) Sealed, tamper-evident

A carefully formulated topical research serum combining arbutin, vitamin C, hyaluronic acid (HA), and ceramides in a lightweight formulation. This combination is designed for research involving the interaction of brightening agents, antioxidant ingredients, hydration-supporting compounds, and skin-barrier components.

Includes one bottle

Why order from us

Every lot is independently tested before it ships, and the paperwork is public — not just a badge on the page.

99%+ purity, every lot

Verified by RP-HPLC and mass spectrometry against a reference standard prior to release.

Independent lab testing

Analyzed by a third-party laboratory with no ownership stake in this business. Full reports linked per lot.

Manufactured in the USA

Synthesized and lyophilized in a domestic facility operating under cGMP-aligned quality practices.

Sealed & tamper-evident

Individually sealed vials with a tamper-evident cap and batch-coded label matching the published COA.

Here to help

Questions before or after you order go to our team, not a call center.

Screened for endotoxins & heavy metals

Every lot is tested for bacterial endotoxins and heavy metal contamination — safety checks that go beyond purity and identity alone.