Butt skin care is definitely a thing now.

The same way facial beauty routines have expanded to include cleansers, toners, serums, creams and masks, beauty brands have started releasing products specially tailored to your booty. There are now sheet masks for your rear end, along with special moisturizers, exfoliating scrubs, serums, and oils.

And if you want your backside to have the same dewy, post-chemical peel glow your face has after a facial, aestheticians are also offering the same services for your bottom.

Beauty analysts say the rise in butt-specific products is likely a result of the broader growth of the market for skin care, which was a $5.6 billion industry in 2018, according to market research firm NPD Group. The companies are also catering to consumers who want their skin-care products to be “clean.” (While “clean” beauty is an ambiguous term, it generally describes brands that claim they don’t use harmful ingredients in their products.)

“If you think about the bigger trends in beauty and why skin care as a whole is growing so fast, it’s because of clean brands,” said Larissa Jensen, an analyst at NPD Group. Ms. Jensen said the skin-care industry had grown 8 percent between June 2018 and 2019.