Your satisfaction, guaranteed
Backed by USA-based, ISO/IEC 17025-accredited lab testing and free shipping protection — so you can order with total confidence.
The four guarantees
Return any unopened, factory-sealed vial within 30 days for a full refund. No restocking fee, no hassle.
Unopened vials · 30 daysEvery product ships with a third-party COA from a USA-based, ISO/IEC 17025-accredited lab. If it ever tests below spec, we refund you, replace it free, and cover the test.
COA with every productOrders $150+ — and our Senior Researcher loyalty tier and up — are protected against loss or damage in transit, free. Lost or damaged? We reship or refund.
Loss & damage in transitIf anything about your order isn’t right, we’ll make it right — no questions asked.
Every orderHow we make it right. A free replacement ships with a prepaid label, and any refund lands in 3–5 business days.
How the purity guarantee works
Every product ships with a third-party COA — and if one ever tests below spec, here is exactly what happens:
Full refund and return terms are in the policy below.
Read the full guarantee