NAD+ vs Niacinamide: Which One Actually Helps With Wrinkles?

NAD+ is the ingredient getting all the attention on Korean skincare labels right now. But according to a 2026 dermatology review, the clinical evidence for putting it on your skin is still considered “investigational” — while a much older, less trendy ingredient in the same bottle already has a real placebo-controlled trial behind it. So … Read more

Probiotic CFU Count: Does Higher Really Mean Better?

comparing probiotic supplement labels

Probiotic labels love to compete on one number: CFU count. But NIH’s own guidance says that number isn’t what determines whether a probiotic actually works — the specific strain is. Here’s what actually matters when you’re comparing two bottles on a shelf. This post contains affiliate links. If you make a purchase through them, we … Read more

Does Magnesium Lotion Really Absorb Through Your Skin?

applying magnesium lotion to leg for muscle relief

Magnesium oils and lotions are marketed as a way to get magnesium into your body without swallowing a pill. A peer-reviewed review of the science reached a blunt conclusion: the evidence for that claim is scientifically unsupported. Here’s what the research actually found, and whether that changes anything for the leg cramps or muscle aches … Read more

Does Magnesium Glycinate Absorb Better? What the Evidence Says

supplement bottle on a nightstand in a bedroom

Magnesium glycinate is sold everywhere as the “best absorbed” form of magnesium. The problem: the official NIH list of well-absorbed magnesium forms doesn’t actually include it. Here’s what the research does and doesn’t say about absorption, sleep, and how much is actually safe to take. This post contains affiliate links. If you make a purchase … Read more