AceShowbiz - As Mandy Moore awaits the arrival of her third child, she's been candid about dealing with a skin condition known as melasma, which surfaced during her pregnancy. The "This Is Us" star recently took to Instagram Stories to share her experience, accompanied by a photo of herself using a Lyma Laser device to address this condition.

"Pregnancy melasma is the pits," Moore confessed while using the laser on her temple.

According to the Cleveland Clinic, melasma is a benign condition causing brown or blue-gray patches on the skin, often appearing on the cheeks, nose, chin, upper lip, and forehead. It's commonly referred to as the "mask of pregnancy" and can affect 15-20% of pregnant people.

Melasma worsens during the summer months due to increased sun exposure, making Moore's current pregnancy particularly challenging in this regard. To tackle this issue, she has turned to the Lyma Laser, a device advertised to deliver "unrivaled results on signs of aging, wrinkles, rosacea, pigmentation, skin elasticity, and scarring." Moore hopes it will help reduce her melasma symptoms, noting, "I heard @lymalife can help."

The skin condition aside, Moore is overjoyed about adding to her family with her husband, Taylor Goldsmith. In June, the couple, who already share two sons - Gus, 3, and Ozzie, 19 months - announced they are expecting a baby girl through a heartfelt Instagram post. "Sometimes life imitates art," they captioned, referencing Moore's role as Rebecca Pearson on the hit NBC show.

Discussing her current pregnancy, Moore told PEOPLE, "It's so much fun. I know that parents sort of love to say it just gets better, but I truly believe that is the case. We have one that's obviously potty-trained and the other's still in diapers, but they're only 20 months apart so they're just starting to interact with each other."

Moore also shared some insights into the dynamic changes in her household. "My husband and I looked at each other the other day and we're like, 'This is a good phase.' But also recognizing in parenting, it's an ebb and flow," she explained. "You cannot get used to anything because as soon as you sort of digested it and you're like, 'Oh wow, we can handle this,' then some other challenge is thrown your way."

Mandy Moore continues to captivate her audience not just through her career, but by sharing the highs and lows of her personal life, making her all the more relatable as she prepares for the arrival of her little girl.