Mineral powder Gosh. The mineral loose powders with a very light and silky texture that provide a matte and natural finish. The mineral powders of Gosh They seal, mattify and smooth makeup, allowing it to last longer. They are ideal for removing unwanted shine in the T-zone of the face, sealing makeup and bringing a touch of light to the face. To achieve a perfect finish, we recommend applying this product with a special brush for loose powders.