Kim Kardashian revealed a secret about her skin in an interview with Refinery29 on Wednesday.

The reality TV star, 42, opened up about struggling with adult acne and said most people don’t notice because she keeps it concealed ‘really well under makeup’.

‘Oh, I’ve gotten full acne, like full bouts of it,’ the entrepreneur — who recently admitted she’s been ‘struggling’ as a single mom following her divorce with her ex-husband, Kanye West — revealed.

‘But I’ve documented it,’ she said. ‘I think if people saw it, they’d be really shocked to know that I had that experience.’

To deal with her acne, she said she started playing with different products and even incorporating ingredients she likes into her luxury skincare brand, SKKN by Kim.

Secret struggle: Kim Kardashian revealed a secret about her skin in an interview with Refinery29 on Wednesday. The reality TV star, 42, opened up about struggling with adult acne and said most people don’t notice because she keeps it concealed ‘really well under makeup’

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The SKIMS founder said this journey was something she ‘never thought I would experience in my 40s’.

The Kardashians star also revealed her skin as gotten more sensitive over the years and she worked really hard to pinpoint the cause of her acne.

‘I’m like, “Should I stop using oils if I have acne?” Then realizing, no, to stop using oil hasn’t been helpful,’ she recalled trying to find the products that works for her skin type.

‘It could be hormonal or a change in supplements,’ she also said. ‘Every time I change the way that I eat or try different foods — I guess my skin has gotten really sensitive.’

‘It’s been really interesting to try new products and figure out what works for different skin that I never thought I would experience in my 40s.’

In addition to dealing with adult acne, Kardashian also struggles with chronic psoriasis — something she has been vocal about in the past.

‘I’d love to thank my mother for that issue,’ she said to the outlet. ‘I’m the only one of her kids that got it.’

On the frustrating process of looking for a solution to clear the chronic rashes, she said she still does not know why it occurs and has ‘kind of given up on trying to figure it out’.

Candid chat: The SKIMS founder said this journey was something she ‘never thought I would experience in my 40s’

Opening up: The Kardashians star also revealed her skin as gotten more sensitive over the years and she worked really hard to pinpoint the cause of her acne

Relatable: In addition to dealing with adult acne, Kardashian also struggles with chronic psoriasis — something she has been vocal about in the past

Sensitive skin: On the frustrating process of looking for a solution to clear the chronic rashes, she said she still does not know why it occurs and has ‘kind of given up on trying to figure it out’

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‘I’m still very confused about my psoriasis and what triggers it,’ she explained.

‘Sometimes I’ll be completely stressed out and I’ll be completely clear with my psoriasis,’ she continued.

‘Sometimes I’ll be zen as can be, not a care in the world, and my psoriasis will completely flare up,’ she added. ‘They say it should be the opposite.

‘I’ve kind of given up on trying to figure it out.’