Most people think sunscreen performance depends on the formula. But in real-world shipping—Packaging is often what makes or breaks SPF stability.
Sunscreens and active skincare formulas are highly sensitive to:
This leads to:
And here’s the catch: These issues often happen during shipping and storage — not production.
Traditional plastic bottles have a silent flaw: Oxygen slowly permeates through the material
Over time, this gradually degrades sensitive formulas—especially during long-distance logistics.
The key is the middle layer:
EVOH (Ethylene Vinyl Alcohol) — a high-barrier material
Its job is simple:
So your product performs the same from factory to end user.

At PYC, we don’t just supply 5-layer EVOH bottles. We focus on what happens after production:
Because in reality—Most failures happen after products leave the factory.
Upgrading packaging isn’t a cost increase.It’s a risk reduction strategy.
Not sure if your formula needs EVOH protection?Comment “EVOH” and I’ll send you a quick evaluation checklist.
Email: hello@pyc365.com
Website: www.pyc365.com