Beauty assesses skincare and haircare by ingredient, concentration and delivery, comparing marketing language against dermatological evidence. Coverage includes sun protection, retinoids, acne treatment, hair loss and the gap between a cosmetic effect and a clinical one. For readers deciding what needs a prescription.
Skin and hair care judged on ingredients and concentration rather than packaging, covering what a formulation achieves and what needs a clinic instead.
Every color in a cosmetic product, from a mineral blush to a synthetic lipstick pigment, is regulated under a decades-old federal system. Here is how the approval process works and why it still bars a dye that is only now being phased out of food.
Written by Sarah Collins
Ridging, white spots, and slow growth are usually benign, while some nail changes, including certain discolorations and sudden multiple-nail changes, merit medical evaluation.
Written by Sarah Collins
Glycolic, lactic, and salicylic acids have trial support for texture, tone, and blemishes, with differences in depth, strength, and sun sensitivity that shape their use.
Written by Sarah Collins
The stratum corneum works like bricks and mortar, and moisturizer classes, humectants, emollients, and occlusives, support it in measurably different ways.
Written by Sarah Collins
Minoxidil and finasteride carry the strongest trial records for pattern hair loss, while supplements, laser devices, and PRP sit on thinner or emerging evidence.
Written by Sarah Collins
Hyaluronic acid holds water in skin effectively as a humectant, and small trials suggest oral and topical forms may improve hydration measures, with limits worth knowing.
Written by Sarah Collins
Randomized trials support benzoyl peroxide, adapalene, azelaic acid, and several prescription options, while pore strips, toothpaste, and most natural-ingredient claims lack comparable evidence.
Written by Sarah Collins
Niacinamide, a form of vitamin B3, has trial support for barrier function, tone, oiliness, and blemishes at low concentrations, with a favorable tolerability record.
Written by Sarah Collins
Both sunscreen types must pass the same FDA effectiveness testing, but their active ingredients, textures, and open safety questions differ in ways worth understanding.
Written by Sarah Collins
Clinical studies support topical vitamin C for pigmentation and photoaging markers, but formulation stability and concentration claims complicate shelf decisions.
Written by Sarah Collins