• Kylie Jenner recently launched a new skincare line called Kylie Skin.
  • The line features a walnut face scrub, among other products.
  • The internet is not a fan of the walnut powder used in the scrub (though derms say it's safe), and called Kylie out on social media.

Kylie Jenner's Kylie Cosmetics line has been a major success (hello, she became a billionaire because of it), so it makes sense that she's expanding into skincare.

Earlier this week, Kylie did just that with the launch of Kylie Skin, which will officially be available on May 22. The skincare line features a foaming face wash, vanilla milk toner, face moisturizer, vitamin C serum, and eye cream-but one product in particular is getting some heat online: her walnut face scrub.

According to a tweet from Kylie Skin, the ingredients in the scrub include "fine walnut powder," along with glycerin to "help balance the moisture in your skin," and ginseng extract to help "energize the skin."

Blend of fruit extracts and fine walnut powder- to help gently exfoliate Ginseng Extract- helps energize the skin Fragrance Free - Kylie Skin (@kylieskin) May 14, 2019

Kylie's tweet about the "fine walnut powder" sent the internet into a walnut-hating frenzy, because many believe walnut powder has the potential to be super abrasive to the skin. You can see from beauty Twitter's comments below:

do NOT pay this billionaire your hard earned money so you can tear up your precious faces with tiny bits of walnut. DO NOT - beth mccoll (@imteddybless) May 14, 2019

If you really believe that Kylie Jenners skin looks the way it does from using her new skincare line, then you deserve the consequences of a walnut face scrub - Glitter Titties (@kelli_michelle7) May 13, 2019

in regards to Kylie's walnut scrub... y'all. its 2019. we off abrasives on our faces. we on liquid acids. - Darian Symon Harvin (@dariansymone) May 14, 2019

Kylie will sell you abrasive walnut shells and continue to use La Mer, Rvive, and other top tier skincare brands, on top of laser peels and facials. Spend your money on brands you trust. https://t.co/paAcQUg68E - Jay Miranda (@jaymiranda_) May 15, 2019

Lots of harsh words, so what's the deal? Is Kylie Skin's walnut face scrub really that bad?

The worry here is that walnut scrub might cause microscopic tears in the skin-but there's no scientific data to prove that. "Walnut shell powder has traditionally been used in facial exfoliating scrubs. Despite controversy that it causes microscopic tears in the outer skin layer, there is no definitive data that I know of proving it is truly any harsher on the skin compared to other manual exfoliating ingredients," says New York dermatologist Joshua Zeichner, MD.

It's also important to note that it's unclear how the walnut powder is formulated, says Zeichner, or how fine the granules are, which can impact the product's effectiveness and tolerability (larger, uneven particles tend to be rougher on the skin).

Basically, if you want to use it, give it a try-but don't force things just to be able to use Kylie's newest product. "My best recommendation is to use the product gently for the first time if you want to try it," says Zeichner. "If you develop redness or irritation, rinse it off and stop immediately."

In a promotional video , Kylie said the walnut scrub is gentle enough to use every day, but she only uses the scrub two to three times a week. Zeichner recommends exfoliating once per week and advancing more frequently if you can tolerate the product, and using caution if you have sensitive skin.

Whether or not you use Kylie Skin is totally up to you, and it's definitely safe to try out from a dermatologist's perspective-even if the masses aren't so sure about it.