The 4-in-1 Pressed Mineral Makeup SPF15 by PUR is highly praised by Hanna in their video review. Hanna mentions that the shade MN3 is a little too dark for their fair skin during winter but will be perfect in the summertime. They use a flathead brush to pat the product into their skin and note that it looks beautiful even without foundation underneath. Initially, Hanna wasn't a fan but found that experimenting with different moisturizers and foundations helped achieve a flawless look. They also appreciate the convenience of reapplying throughout the day due to the SPF content. Overall, the 4-in-1 Pressed Mineral Makeup SPF15 by PUR is a versatile and effective foundation with the potential drawback of limited shade options.