BEAUTY lovers and Kardashian fans rejoiced when SKKN by Kim launched.

One doctor and cosmetics expert said she wouldn't use the skincare products, and said she doubts Kim Kardashian does, either.

Dr Vanita Rattan is a cosmetics expert with her own skincare line, and according to its website, the brand aims to serve people of color who are often overlooked by the beauty industry.

When reality TV mogul Kim Kardashian launched SKKN, Dr Rattan felt compelled to voice her concerns about the products on TikTok.

Though there were a few products in the skincare line Dr Rattan gave her seal of approval, there were others she said would be too harsh for some skin types – and others that just "aren't worth the money."

"I like the cleanser but it's expensive," Dr Rattan said. "A better dupe would be Cetaphil."

Kim's cleanser costs $43 for 4.2 ounces, while $12 gets you almost five times as much product if you choose Cetaphil's Gentle Cleansing line.

Dr Rattan also said the cleanser isn't a good fit for all skin types. "Don't use it if you have oily, acne-prone skin," she warned.

The second "step" in the SKKN routine got "a big no" from Dr Rattan.

"This 'toner' is not a toner," she said, showing a picture of the $45 product. "It's an exfoliator. It's a chemical plus enzyme exfoliator."

She warned the witch hazel and denatured alcohol are ingredients that might cause irritation.

If you do choose to use the SKKN toner, Dr Rattan warned to skip the line's targeted exfoliating product.

"This exfoliator is Kim Kardashian's favorite product, but it's the worst so far, " she warned. The "mechanical exfoliator" also contains enzymes for added power.

"It's too harsh after the 'toner,'" Rattan said. "Please avoid, especially if you have sensitive skin."

The moisturizer (which Rattan called "basic") didn't impress her much, and neither did the under-eye cream.

She said the moisturizer didn't contain ceramides, peptides, or vitamins that would justify the $85 price tag.

On the other hand, the eye cream's trendy packaging might sabotage any benefits from the ingredients list.

"It does contain peptides, but it's not in airless packaging, which means it's unlikely to be effective," Rattan said. "I doubt she actually uses this product."

There were a few items in the product lineup that got a more favorable review from Dr Rattan.

"This vitamin C serum is okay," Rattan said. She recommended Regena c30 as a "superior dupe." The affordable brand is $32 instead of SKKN's $90 serum.

Rattan reacted the same way to Kim's night oil.

"I do like it but it's not worth the price," she said. "It's better to use Paula's Choice."

Similarly, the $95 oil drops contained one of Dr Rattan's favorite ingredients, but that wasn't enough for her.

"The price tag just doesn't stack up," Rattan said. She pointed out that several other products on the market cost 1/9 of the price and still contain tetrahexyldecyl ascorbate, her "favorite vitamin C."

The Sun reached out to SKKN for comment on the formulations and price point of the products.

To conclude her review, Dr Rattan did say that Kim likely uses most of her own products, but they aren't the secret to her enviable skin.

"She's supplementing with ceramides, peptides, vitamins, plus professional-grade treatments," Rattan reminded viewers.

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