The Charlotte Tilbury Hollywood Flawless Filter is a liquid highlighter that can be used as a primer, highlighter, or foundation booster. It contains various ingredients, including water, mica, glycerin, and squalane. The product is fragrance-free, cruelty-free, and free from harsh alcohols, common allergens, fragrances, oils, parabens, and sulfates. It is described as a product that can soften focus, illuminate the skin, and make lines and pores appear smoother. Some users find it to be a hit or miss depending on their skin type and preferences, and it has a high price tag