Browse evidence-based analysis of health-related claims and assertions
Doctors use different strengths of the enzyme injection depending on whether they're treating the butt or thighs — weaker for thighs — and must use regular salt water, not special preserved water, to keep the enzyme working.
Descriptive
A special enzyme injection breaks up the tough bands under the skin that cause dimples, making the skin look smoother in the butt and thighs.
Mechanistic
These capsules can hold a lot of minoxidil — half their weight — and still stay stable in solution, which is hard to do because minoxidil doesn’t dissolve well in water.
The more of these capsules you put on the mouse’s skin, the more hair grew back — and the strongest dose worked better than plain minoxidil.
These tiny capsules didn't harm skin cells in the lab, even at high doses, and didn't stop the cells from multiplying.
When applied to mice, these minoxidil capsules made the hair grow back faster and thicker than regular minoxidil, by helping more hair follicles stay in the growing phase.
These tiny capsules made from chitosan can hold a lot of minoxidil and slowly release it into the skin better than regular minoxidil solutions.
If a product doesn’t clog rabbit ears much, it’s probably fine for most people’s skin — but if you’re the type who gets lots of blackheads, it might still cause problems.
Rabbits’ ears get clogged more easily than human skin when tested with the same products, so the rabbit test might be too strict and flag things that don’t actually clog human pores.
Some ingredients that clog rabbit ears also seem to clog pores in young Black men’s skin when left covered for a month, so rabbit tests might help guess which products could cause breakouts in people.
New ways to treat adult female acne include a new topical cream that blocks male hormones, eating better and reducing stress to lower insulin, taking berberine as a supplement, and future vaccines that target a specific bacterial enzyme.
Eight out of ten people with acne have a family history of it, meaning genes play a big role.
In half of adult women with acne, high male hormone levels or extra-sensitive skin receptors are to blame — and in most of those cases, it’s linked to PCOS, a hormonal disorder.
About 1 in 5 adult women still get acne after age 25, and it’s different from teenage acne.
Quantitative
In adult women, acne happens because the skin makes too much oily stuff, which clogs pores and lets bad bacteria grow, causing red bumps and scars.
If you block the ATM protein in skin, the skin tans more after sun exposure because it can’t pause pigment production to fix DNA damage.
After sun exposure, a chemical tag (phosphate) is added to a protein called MITF, making it stop making pigment and instead team up with other proteins to fix DNA damage.
After you get sunburned, your skin temporarily stops making tan pigment because a protein called ATM redirects another protein (MITF) to fix DNA damage instead of making color.
When exposed to UV light in the lab, this sunscreen didn't make human skin cells become toxic or die, meaning it doesn't cause harmful reactions when hit by sunlight.
This sunscreen uses special fat-based nanoparticles and a plant-derived compound to help the sunscreen stay stable and not get absorbed into the body.
After 8 hours, about 28% of one UV filter and 40% of another slowly leaked out of the sunscreen, meaning it releases the active ingredients slowly over time.
This sunscreen stayed effective even after being exposed to strong UV light — equivalent to 10 times the amount that would normally cause sunburn — without breaking down.
When tested on human skin cells and skin models, this sunscreen didn't kill cells or cause irritation, so it might be gentle on skin.
How often you get Botox or how young you start doesn’t change how your face ages naturally — your skin follows the same aging path no matter what.