The product you're likely referring to is the Charlotte Tilbury Pillow Talk Big Lip Plumpgasm Go to product viewer dialog for this item.

. It is a viral plumping lip gloss designed to provide both instant and long-term volume through specialized heat and ice technology. Charlotte Tilbury Pillow Talk Big Lip Plumpgasm

Reviewers from Marie Claire and Tyla note that while the plumping isn't "extreme," it creates a noticeably fuller, more rounded pout almost immediately.

The precision diamond-shaped applicator is highly rated for making even application easy, even on the go. Similar Alternatives

According to the manufacturer, Charlotte Tilbury , this product is formulated with hydrating hyaluronic acid and plump-effect collagen. It is marketed to increase the look of natural lips by 25% in two weeks with twice-daily application.