The proof,
without the clutter.

Dark marks and uneven tone

1. AAD: fading dark spots in darker skin tonesClinical guidance · cause-first care, irritation and tinted sunscreen
2. AAD: melasma treatmentClinical guidance · diagnosis boundary and treatment context

Lesion type before treatment

1. AAD: acne signs and lesion typesClinical guidance · blackheads, pustules, nodules and cysts
2. AAD: deep painful pimple guidanceClinical guidance · patches, home care and escalation
3. Hydrocolloid acne dressing trialRandomized pilot · limited sample and scope

Concentration changes the job

1. Topical urea in skincareReview · moisturization versus keratolysis
2. Urea clinical literatureSystematic review · uses and tolerability

Texture, odor and irritation

1. AAD: chemical exfoliation safetyClinical guidance · discoloration and injury boundaries
2. Keratolytics for keratosis pilarisReview · promising, heterogeneous evidence

Red, blue and near-infrared LED

1. FDA-cleared LED mask exampleRegulatory record · intended uses vary by wavelength and device
2. FDA OTC light-based acne categoryRegulatory database · verify the exact model

What “glow” can mean

1. Appearance benefits of moisturizationHuman optical study · hydration and surface light scattering
2. AAD: simple skincareClinical guidance · cleanse, moisturize and protect

Diaper cream and petrolatum

1. Diaper dermatitis prevention reviewLiterature review · evidence belongs to diaper-area care
2. AAD: petroleum jelly and facial acne cautionClinical guidance · barrier use with limitations

Evidence is not certainty

A clearance is not proof that every similar-looking device works. A funded trial is not automatically useless, but sponsorship and design matter. Formula facts come from current primary records; treatment claims require independent evidence.