When do milia commonly resolve without treatment?

Milia are small, white cysts that typically appear on the skin, especially around the eyes, cheeks, and nose. They often occur in newborns, but can also appear in individuals of any age. The cysts contain keratin and are formed when skin flakes become trapped beneath the surface of the skin.

In the case of newborns, milia commonly resolve on their own within a few weeks as the skin matures and the cysts eventually break down or are naturally sloughed off. This self-resolution is a normal part of the skin's developmental process. The natural turnover of skin cells plays a critical role in this timeframe.

When considering other timeframes, milia do not typically resolve within a few hours or days, as this is too short for the skin to undergo the necessary cellular changes. Additionally, while milia may appear persistent in adults and can require treatment, many cases will resolve without intervention given enough time, typically within a few weeks.