Skincare Trivia
0Loading crowd target
0Loading crowd target
7correct to beat the crowd
98 free Skincare trivia questions with answers — science & nature quiz, new questions added Oct 2026.
50 free Skincare trivia questions with answers. Skincare is a hundred-billion-dollar industry built on a few square metres of the body's largest organ. This quiz covers the science first: the three layers of skin, melanin and melanocytes, sebum and acne, and what retinol, hyaluronic acid, niacinamide, salicylic acid and collagen actually are. Then sunscreen, from the wartime Red Vet Pet to the SPF scale and why the EU stops at 50+. The brands and history get their turn too: Galen's second-century cold cream, Nivea's snow-white name, the oil-rig residue that became Vaseline, Elizabeth Arden's red door, Helena Rubinstein's Melbourne face cream, Estée Lauder's four products, Clinique's lab coats, Olay's odd aliases and the influencer who sent CeraVe sales soaring. It suits beauty nights, salon quizzes and anyone with a ten-step routine. Every answer was checked against the Wikipedia articles on the skin, its conditions, the ingredients and the brands, and each question shows the sentence that supports it once you answer. Free, no signup.
30 of 98 questions with answers and explanations. Play the quiz
Q 01Where on the body is human skin at its thinnest?
The eyelids
The eyelids. Their skin has no layer of fat beneath it, which is why fluid makes them puff up so readily.
Q 02What are the three primary layers of the skin, from outside in?
Epidermis, dermis, hypodermis
Epidermis, dermis, hypodermis. Stretch marks form in the middle one: the dermis tears when skin is stretched beyond the limits of its elasticity.
Q 03Which of these does the epidermis lack entirely?
Blood vessels
Blood vessels. The epidermis has none of its own, so its living cells depend on nutrients that diffuse up from the dermis underneath.
Q 04Which cells produce the pigment that gives skin its colour?
Melanocytes
Melanocytes. People of every skin tone have roughly the same number of them; what differs is how much pigment each one makes.
Q 05Which inherited condition leaves the body unable to turn the amino acid tyrosine into melanin?
Albinism
Albinism. In its most severe form one enzyme, tyrosinase, doesn't work, and because it handles the very first step of the chain, no melanin gets made at all.
Q 06Pheomelanin, one of the two main forms of melanin, dominates in which natural hair colour?
Red
Red. Pheomelanin doesn't shield skin from ultraviolet light the way the darker eumelanin does, which is why redheads tend to burn rather than tan.
Q 07Which oily, waxy substance do skin glands release onto hair?
Sebum
Sebum. Its output surges at puberty as hormone levels climb, which is why oily skin and spots so often arrive in the teenage years.
Q 08Which two parts of the body have no oil glands in their skin?
Palms and soles
Palms and soles. They make up for it in sweat: the same skin is among the most densely packed with sweat glands anywhere on the body.
Q 09Which acne treatment is known for bleaching towels, pillowcases and clothing?
Benzoyl peroxide
Benzoyl peroxide. It is a bleach, used industrially to whiten flour and textiles, so users are warned to keep it away from fabric and hair.
Q 10What is the medical term for a clogged hair follicle, seen as a blackhead or whitehead?
A comedone
A comedone. Left open to the air it shows as a blackhead, and despite appearances that dark tip isn't trapped dirt.
Q 11Which oral drug for severe acne was sold for decades as Accutane?
Isotretinoin
Isotretinoin. It can cause severe birth defects, so in the US it is dispensed only through iPLEDGE, a registry that patients, prescribers and pharmacies all have to join.
Q 12Salicylic acid, a common acne ingredient, takes its name from which tree?
Willow
Willow. Salix is the tree's Latin name: the acid was first made from salicin, a compound in willow bark, and chemists later reworked it to create aspirin.
Q 13Niacinamide, used in serums for redness and dark spots, is a form of which vitamin?
B3
B3. Niacin, the vitamin's other common form, is known for the hot flush it brings to the skin; niacinamide does the same nutritional job without it.
Q 21Which two minerals are the active ingredients in 'physical' or mineral sunscreens?
Zinc oxide and titanium dioxide
Zinc oxide and titanium dioxide. In 2021 the FDA proposed them as the only two of sixteen sunscreen filters it could call safe and effective, and asked for more data on twelve others.
Q 22Dermatologists' Fitzpatrick scale sorts skin into six types by how it reacts to what?
Sun exposure
Sun exposure. The same scale is the basis for the skin-tone options on emoji, which offer five shades because its two palest types are merged into one.
Q 23Red Vet Pet, the wartime sun protectant developed in 1944, was commercialised as which brand?
Coppertone
Q 14Retinol, the anti-wrinkle ingredient, is a form of which vitamin?
A
A. The eye uses the same vitamin to make the light-catching pigments of the retina, which is why a shortage shows up as night blindness.
Q 15Which moisturising ingredient is also injected as a gel to plump lips and smooth wrinkles?
Hyaluronic acid
Hyaluronic acid. It swells with water into a gel, and because the body gradually absorbs it, the plumping fades and the injections have to be repeated.
Q 16Which protein in skin takes its name from the Greek word for glue?
Collagen
Collagen. Glue was once made by boiling animal hides and sinews, and the sticky protein that came out of the pot gave the word its meaning, 'glue producer'.
Q 17Which acid in peels and toners occurs naturally in sugar cane?
Glycolic acid
Glycolic acid. It is the smallest of the alpha hydroxy acids, so it slips into the skin more easily than its bulkier cousins.
Q 18Lack of which vitamin causes scurvy?
C
C. The Royal Navy gave its sailors citrus juice to keep scurvy at bay, which is how the British came to be nicknamed 'limeys'.
Q 19On a sunscreen label, what does SPF stand for?
Sun protection factor
Sun protection factor. It rates how much UV it takes to burn protected skin, not how long you can stay out: the idea that SPF 30 buys thirty times longer in the sun is a common misreading.
Q 20A sunscreen's SPF number mainly rates protection against which sunburn-causing part of sunlight?
UVB rays
UVB rays. They are the main cause of sunburn; UVA, the rays behind wrinkles and age spots, is why a label should carry the words 'broad spectrum' as well.
Coppertone. Pharmacist Benjamin Green's lotion was sold to deepen a tan, and its famous billboards showed a dog tugging down a little girl's swimsuit to reveal her tan line.
Q 24How often do sunscreen labels typically say to reapply?
Every two hours
Every two hours. A higher SPF doesn't buy extra time: it wears off the skin just as fast, and swimming or sweating shortens the interval further.
Q 25Which became the first US state to ban sunscreens containing the UV filter oxybenzone?
Hawaii
Hawaii. Lawmakers acted after studies linked the chemical to damage in coral reefs, and the ban covers a second filter, octinoxate, as well.
Q 26Which claim are US sunscreen labels barred from making?
Waterproof
Waterproof. Every sunscreen eventually washes off, so the most a US label may claim is 'water resistant', for either 40 or 80 minutes of swimming or sweating.
Q 27The invention of cold cream is credited to which second-century physician?
Galen
Galen. He blended beeswax and oil with rose water, and the recipe has lasted so well that French pharmacists still make a version named after him.
Q 28Which cream, sold in a flat blue tin, takes its name from the Latin for snow-white?
Nivea
Nivea. Its makers chose the name in 1911 because the finished cream came out a pure, snowy white.
Q 29Lanolin, a rich grease used in lip balms and skin creams, comes from which animal?
Sheep
Sheep. Lanolin is the wax that helps their fleece shed rain, and it is extracted from the wool once it has been shorn.
Q 30Which product did chemist Robert Chesebrough develop from 'rod wax', a residue oil drillers rubbed on cuts and burns?
Vaseline
Vaseline. He is said to have built the name from Wasser, German for water, and elaion, Greek for oil, in the belief that petroleum formed from water underground.