Technically the shelf life of Waxhead Sunscreen is 3 years from purchase, but the useful life of our sunscreens has no practical limit, since our active ingredient zinc oxide is a mineral and does not lose its sunscreen capabilities over time, EVER.
Our inactive ingredients are relatively resistant to oxidation, and zinc oxide acts as both an antimicrobial and anti-fungal preservative.
However, the FDA requires all sunscreen products to list a 3-year shelf life (mainly because petrochemical active ingredients in common sunscreens degrade over time).
Regardless, if you ever feel a Waxhead product has spoiled, just let us know, and we'll send you a free replacement.
Ask us anything!
Email Mac questions about sunscreen, skincare or anything outdoors > firstname.lastname@example.org