Sunscreen
topical skin product that helps protect against sunburn
Sunscreen, also known as sunblock, sun lotion or sun cream, is a photoprotective topical product for the skin that helps protect against sunburn and prevent skin cancer. Sunscreens come as lotions, sprays, gels, foams (such as an expanded foam lotion or whipped lotion), sticks, powders and other topical products. Sunscreens are common supplements to clothing, particularly sunglasses, sunhats and special sun protective clothing, and other forms of photoprotection (such as umbrellas). Sunscreen is on the World Health Organization's List of Essential Medicines.
Sunscreen products may be classified according to the type of active ingredient(s) present in the formulation (inorganic compounds or organic molecules) as:
Mineral sunscreens (also referred to as physical sunscreens), which use only inorganic compounds (zinc oxide and/or titanium dioxide) as active ingredients. These ingredients primarily work by absorbing UV rays, with some reflection and scattering of UV radiation also occurring.
Chemical sunscreens (also referred to as organic sunscreens), which use organic molecules as active ingredients. Chemical sunscreen ingredients work by absorbing the UV rays and releasing the heat. Additionally, particulate organic UV filters, such as bisoctrizole, can also reflect and scatter a small portion of incident UV light.
Hybrid sunscreens, which contain a combination of organic and inorganic UV filters.
“Sunscreen” enters the record as topical skin product that helps protect against sunburn. Crown Archives preserves that source wording while asking what Sunscreen, topical and skin can confirm, complicate or overturn.
Why this record matters
“Sunscreen” is worth following because a concise public description often conceals a longer documentary argument. Here, Sunscreen, topical and skin provides the most credible route into that argument.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q827658. The Library of Congress control number is sh90000649. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Sunscreen”, its source revision and the description used here.
- Expand the search: follow Sunscreen primary sources, Sunscreen archive and Sunscreen research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Sunscreen”?
- Which cited source is closest to the event, object or claim?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “Sunscreen” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.