Concern

4 plain-language articles on skin & hair — the physiology, the compounds researched for it, and what the evidence actually shows.

4 articles

Skin and hair

The eczema flare that follows the stressful week

You make it through the work crunch, the family event, the bad sleep stretch — and then a day or two after it ends, the inside of your elbows starts itching. The patch behind your knee rough and red again. The eyelid skin tight. The cycle is reliable enough to predict, and it almost always lags the stress rather than coinciding with it.

7 min read
Skin and hair

Hair density after 40

The shower drain isn't the alarming part. The ponytail being thinner around your finger is. Hair thinning in women in their forties tends to creep up — the change happens at the diameter of each strand, at the scalp coverage along the part line, at the volume that used to be there in a low bun. By the time it's obvious, several systems have usually been shifting for a while.

8 min read
Skin and hair

Skin that won't bounce back: collagen, copper, and aging

Somewhere in the early-to-mid forties, most people notice the same thing. Skin that used to recover quickly from a long flight, a poor night's sleep, or a hot summer no longer does. Fine lines settle in around the eyes and stay there. The pinch test — lift the skin on the back of your hand and watch it return — takes a beat longer than it used to. It isn't your imagination. The architecture underneath the surface is genuinely different.

7 min read
Skin and hair

Telogen effluvium: the stress-driven hair loss that grows back

You're shedding. The drain after every shower. Strands on the pillow. A ponytail that suddenly feels half as thick. And the strangest part — you can usually trace it back about three months. Something happened in the spring; your hair started falling out in the summer. The shedding doesn't seem to make sense in the present tense because the cause is already in the past.

6 min read