Try it for 90 days. If it doesn't work, you're refunded.
Complete the full 90-day protocol, and if you don't see visible regrowth, we'll refund what you paid. Here's exactly how it works, in plain terms.
Because we believe it works. And we should prove it.
You've likely tried something before that didn't work. We're not asking you to take our word for it a second time. Complete the full 90-day protocol, and if your hair doesn't respond, you shouldn't have to pay for it. That's the whole idea — not a loophole-filled policy, just a real trial with real terms.
Four steps. No forms, no photos.
If you've completed the full protocol and it didn't work for you, here's exactly what happens.
Complete the protocol
Use your serum daily for the full 90 days, as part of the 90-Day Kit or Complete Protocol purchased on serenoa.com.
Email us
Write to us within 14 days of finishing day 90, with your order number and shipping address.
Return your bottles
Mail us your three empty bottles so we can verify you completed the full 90-day protocol.
Get refunded
Once verified, your refund is issued within 3-5 business days, minus a $9 processing fee.
What's covered, and what isn't.
Covered
- Purchased directly from serenoa.com — order number required
- The 90-Day Recovery Kit or the Complete 90-Day Protocol
- Used daily for the full 90-day protocol
- Claim filed within 14 days of completing day 90
- All three empty bottles returned with your order number
Not covered
- Purchases from third-party retailers or marketplaces
- Single-bottle purchases (not part of a 90-day kit)
- Claims filed after the 14-day claim window
- More than one claim per household or shipping address
- Claims without a matching order number or returned bottles
Processing fee. Approved claims are refunded within 3–5 business days to your original payment method, minus a $9 processing fee that covers verification and handling of returned bottles.
One per household. This guarantee is non-transferable and limited to one claim per household or shipping address, regardless of how many customer accounts placed the order.
Fraud prevention. We reserve the right to decline claims that show signs of fraud or abuse, including repeated claims from the same shipping address or mismatched order information.
Still have questions?
The Fourth Trimester Promise only applies to kits purchased directly from serenoa.com, since we need your order number to verify your purchase. If you bought through a third-party retailer or marketplace, please contact that seller directly for their return policy.
The 90-day trial has a defined 14-day claim window after you finish day 90, so we can process your refund while your purchase is still recent. Claims submitted after that window unfortunately can't be honored — we'd encourage you to mark your calendar around day 90 so you don't miss it.
No photos and no forms. We ask for your order number and your three empty bottles — that's what lets us verify you completed the full protocol, without asking you to document your experience.
This guarantee is limited to one claim per household or shipping address, regardless of how many customer accounts were used to purchase. It's not transferable between orders or people at the same address.
The fee covers the cost of verifying and processing your returned bottles. It's deducted from your refund automatically — there's nothing extra for you to pay.
The Fourth Trimester Promise applies to the 90-Day Recovery Kit and the Complete 90-Day Protocol, since those are the offers built around the full 90-day timeline the guarantee is based on. A single bottle is a good way to try the serum, but it isn't a complete protocol, so it isn't covered by this specific guarantee.
Ready when you are
The only risk is waiting.
90 days, real terms, your money back if it doesn't work. Begin your protocol today.
Start your 90-day protocol →