retinol

/ret-n-awl, -ol/US // ˈrɛt nˌɔl, -ˌɒl //UK // (ˈrɛtɪˌnɒl) //

视黄醇,视黄酮,视紫红质

Definitions

n.名词 noun

1
- : vitamin A.
- : Chemistry. a yellowish oil, C32H16, obtained by the distillation of resin, used as a solvent and as an antiseptic.

If you’ve never used a retinol before, start by applying sparingly every second or third night for the first two weeks.
It's also the first-hand cream I've used that contains retinol, an ingredient more commonly found in pricey facial serums, which explains the $45 price tag on a 30ml tube.
Retinol, ret′i-nol, n. a hydro-carbon oil used in printers' ink.