THE LAB by BLANC DOUX Oligo Hyaluronic Acid Deep Toner is a hydrating toner formulated for sensitive skin, available in a 500ml (16.91 fl. oz) bottle. This Korean skin care product focuses on providing moisture through oligo hyaluronic acid, a low-molecular-weight form of hyaluronic acid that is designed to penetrate deeper into the skin layers. The toner is alcohol-free and uses a vegan formula, making it suitable for those who prefer plant-based, gentle ingredients without harsh additives.

The toner works to support pH balance in the skin, helping to maintain a healthy acid mantle after cleansing. Its lightweight, watery texture absorbs quickly without leaving a sticky or heavy residue, making it appropriate for daily use in both morning and evening routines. The large 500ml size offers practical value for consistent application, particularly for those who use toner generously or as part of a multi-step regimen.

This product is suited for individuals with sensitive, dry, or dehydrated skin types, as the oligo hyaluronic acid provides layered hydration without irritation. It can be applied by patting onto the face with hands or using a cotton pad. The formula avoids common irritants such as alcohol, essential oils, and artificial fragrances, which aligns with its intended use for sensitive skin care. The toner is also compatible with other skin care products, including serums and moisturizers, due to its neutral pH and non-comedogenic properties. Overall, it serves as a straightforward, hydrating step in a skin care routine focused on moisture retention and skin barrier support.