She says, "You should not be applying tretinoin like this directly on your scalp," adding what harmful effects this may have, "It is only going to give you more irritation or post-inflammatory ...

Since it can take up to six weeks to see results from using a new formula, we have testers try the best and buzziest in hair and skin care for double that amount of time to determine what actually ...

For those of us who want the best, strongest and most effective ingredients, retinol is an absolute must. And while you can ...

Many TikTokers attest to its deeply hydrating and skin-improving ability — notably, former reality TV star Lo Bosworth, who ...

Benzoyl peroxide has long been a hero ingredient for those suffering from acne, but its newfound link to benzene, a known ...

Some moisture is natural. But for when things go into overdrive, these experts drop the most effective mop-up plan ...

What it costs: Medik8 is a little on the pricier side but certainly far from outrageous. The brand’s products all cost ...

See the skincare ingredients you should never mix to avoid irritation, breakouts, and reduced effectiveness. Learn what to ...