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Frequently Asked Questions

What purity are your peptides?

All of our peptides are synthesized to ≥99.2% purity and verified by independent U.S.-lab HPLC and mass spectrometry testing. Certificates of Analysis are available for every product.

How long does shipping take?

Orders placed before 4 PM ET ship the same day, Monday through Saturday. US checkout has four speeds: USPS Ground Advantage $8.95 (3–7 business days, FREE over $150), USPS Priority Mail $14.95 (1–3 business days, FREE over $250), USPS Priority Mail Express (1–2 business days, FREE over $500), and FREE overnight via UPS Next Day Air on orders over $1,000, free-shipping tiers are measured on your subtotal after discounts.

Do you ship internationally?

Yes. We ship worldwide and send international orders out every day. Select your country at checkout and your order ships via DHL Express or UPS Worldwide Expedited, free on international orders over $500 (measured on your subtotal after discounts), or a $49.95 flat rate below that. Canada and Mexico: 2-5 business days via UPS Worldwide Expedited. Rest of world: 7-21 business days depending on customs. Import duties and taxes are collected by the carrier and are the recipient's responsibility, and buyers are responsible for confirming research materials may be lawfully imported into their country. International orders are paid by card, and we cannot ship to OFAC-embargoed destinations.

Do you offer bulk or wholesale pricing?

Yes, we offer tiered pricing for research institutions and bulk orders. Please reach out via the contact form and our team will provide a custom quote within 24 hours.

What is your return / refund policy?

You're covered three ways. Money-back quality guarantee: if your material doesn't match its independent U.S. lab COA, we replace it or refund you in full within 30 days. 30-day hassle-free returns: unopened, unused items in original sealed condition can come back within 30 days of delivery for a refund (opened items can't be returned, chain of custody, but quality issues on opened items fall under the guarantee). Shipping damage: email info@glowpeptides.com within 48 hours with photos for a free replacement. Orders can also be cancelled for a full refund any time before they enter processing. Full details are on our Guarantee, Refunds & Returns page.

Are your products for human use?

Our peptides are sold strictly for research and laboratory use only. They are not intended for human consumption, veterinary use, or any clinical application.

How do I become an affiliate or provider?

Apply on the Affiliate or Provider signup page. Approved partners receive unique referral codes, commission tracking dashboards, and dedicated support.

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