You don't need to refrigerate products during daily use, but we recommend finishing each bottle within 90 days of leaving the fridge. Storing unused products cold until you're ready to start them is ideal (the kitchen fridge is fine).

Just don't freeze water-based products, and shake well after thawing if any do freeze. Keep all products out of direct sunlight.

Because it's hard.

Most brands outsource production to companies that don't offer refrigeration for finished products, much less their ingredient inventory.

Amazon requires products to withstand 155°F heat indefinitely, typical of major fulfillment centers. And no, there are no exceptions (we tried).

Major retailers won't install fridges that rearrange floor space and make their other lines look inferior (we tried that too).

Exasperated, we chose to do it all ourselves, cold until the moment it ships.

The few days in a shipping box are a tiny fraction of a product's life.

The infographic above shows where the real damage happens: the months or years of warehouse and retail dwell time conventional products go through before reaching your skin. We could throw a cold pack in every box, but that would be an expensive gimmick solving maybe 2% of the problem.

The cold preservation that matters is everything before the box, and that's the part we solve.

Yes. Mila used every Wild Ice product through three pregnancies and while breastfeeding all three.

That's the standard we formulate to. Because cold does the preserving, our products contain none of the chemical preservatives, parabens, sulfates, phthalates, or synthetic fragrances you're told to avoid during pregnancy.

Chemical preservatives only stop one of three ways skincare breaks down: bacterial growth.

But skincare formulas deteriorate through three pathways: microbial, enzymatic, and oxidative. Preservatives address microbial growth only. The other two pathways continue unchecked.

Airless pumps reduce atmospheric oxygen exposure during dispensing. They do nothing about the dissolved oxygen already in the formula from manufacturing, and nothing about thermally driven redox reactions that don't require new oxygen to proceed. Most oxidative degradation in skincare is governed by temperature, not headspace exposure. Your L-ascorbic acid isn't browning because air got in. It's browning because it sat at 78°F for four months.

Any brand using real botanical extracts (and that's virtually all of them) carries endogenous enzymes: lipase, polyphenol oxidase, protease. These are native to the plant material. You can denature them with heat during manufacturing, but that same heat degrades the actives you're trying to protect. It's a lose-lose trade-off.

The variable underneath all three pathways is temperature. Reaction rates roughly double with every 10°C (18°F) increase. A product warehoused at 78°F degrades at roughly 4x the rate of one stored at 42°F.

At Amazon's stated 155°F, the rate goes to over 70x (and we wish those temps were uncommon). No combination of preservatives, airless packaging, and ingredient selection changes the Arrhenius equation.

Cold does. It's the only single intervention that suppresses all three degradation pathways simultaneously.

And, as far as we're aware, we're the only ones willing to use it.