Short answer: a 90-day window gives ample time to judge gradual, cumulative circulation results fairly — request a full refund within 90 days of purchase if you're not satisfied, according to the stated policy.
Why 90 days is a meaningful window
While cited reviews describe initial changes within about a week, fuller benefits are described as building over consistent daily use across several weeks — a 90-day guarantee provides ample time beyond that for a fair, unhurried evaluation.
What the guarantee is described to cover
- A full refund if you're not satisfied with your results
- Request must be made within 90 days of purchase
- Described as a straightforward process, without complicated steps
💡 The honest standard: a 90-day window is genuinely generous for this category — worth confirming the exact, current refund process directly rather than relying solely on a general description.
What to verify before relying on the guarantee
Confirm whether the window is measured from purchase date or delivery date, and what specific steps are needed to request a refund — details worth checking on the official order confirmation.
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