Propylene glycol is a colorless, odorless water-soluble synthetic liquid. Produced by adding water to propylene oxide derived from petroleum. Used as humectant, preservative, solvent, and emollient in various skincare products
SkinCeuticals offers science-backed products with dermatologist recommendations. Drunk Elephant focuses on clean clinical skincare with synthetic ingredients. Neutrogena provides dermatologist-recommended products at drugstores. Dr. Sturm's line uses patient's blood for regenerative effects
Albinism is a congenital condition characterized by complete or partial absence of pigment. Two main types: oculocutaneous affecting eyes, skin and hair, and ocular affecting only eyes. Worldwide prevalence is approximately one in 17,000 people
Melanocytic nevus is a noncancerous skin condition containing pigment-producing cells. Moles appear during first 2 decades of life, with 1 in 100 babies born with moles. Most moles are brown, tan, pink, or black, between 1-3 mm in size. Most people have 30-40 moles, some up to 600
Hydrolyzed collagen is easily absorbed into bloodstream and marketed as antiaging supplement. FDA doesn't regulate supplements like prescription drugs. Collagen is found in skin, bones, cartilage, tendons, teeth, and blood vessels
Earlobes are soft skin flaps at lower part of outer ear. Contain blood vessels and nerves, no cartilage. Genetics determine attachment type: attached, free, or partially attached. Ear circumference increases by 0.51mm per year with age