Beauty Journal

The niacinamide-cancels-out-vitamin-C myth, debunked with the actual pH science, plus a simple AM/PM layering plan and which serums to pair.

Should vitamin C serum go in your morning or nighttime routine? See the clearest timing, layering order, retinol split, and formula choices.

Most retinol peeling comes from the schedule, not the ingredient. Here is the concentration and frequency ramp dermatology research supports, plus the moisturizer sandwich technique.

Tranexamic acid and hydroquinone both have research behind fading dark spots, but they work differently and are not equally easy to shop for. Here is how they compare.