Keratin: This indicates the key ingredient. Keratin is a type of protein that is the primary structural component of hair. A keratin-based product is designed to fortify hair strands, fill in gaps in the hair cuticle, and make hair smoother, stronger, and less prone to frizz and breakage.

Hair Mask: This is the product category. A hair mask is a deep conditioning treatment that is more intense than a regular conditioner. It's meant to be applied to the hair and left on for a period of time (e.g., 5-20 minutes) to allow the ingredients to penetrate the hair shaft and provide nourishment, hydration, or repair.

Brown: This is likely a product variant identifier, potentially a color code for the packaging or a specific formulation. Without further information, it's not clear if this indicates a colored mask for brown hair or simply a name for this particular product line. Given the size and "regular" variant, it's more likely a product line name than a hair dye.

Regular: This term usually differentiates it from other variants, such as those for specific hair types (e.g., "damaged," "color-treated," or "fine"). A "regular" variant suggests it is a standard, all-purpose formula suitable for most hair types seeking general smoothing and strengthening benefits.

1000ML: This is the volume of the product. 1000 milliliters (or 1 liter) is a very large, professional-grade size. This indicates that the product is likely intended for salon use or for individuals who use the product frequently and prefer to buy in bulk.