THE LAB by BLANC DOUX Oligo Hyaluronic Acid Deep Toner is a 200ml (6.76 fl. oz) hydrating toner formulated for sensitive skin. This Korean skincare product focuses on delivering lightweight moisture while maintaining the skin’s pH balance. The formula is alcohol-free and vegan, catering to those who prefer gentle, plant-based skincare.

The key ingredient is oligo hyaluronic acid, which consists of low-molecular-weight hyaluronic acid molecules designed to penetrate deeper layers of the skin for targeted hydration. Unlike standard hyaluronic acid that stays on the surface, this smaller molecule can reach the stratum corneum more effectively, helping to replenish moisture without feeling heavy or sticky. The toner also includes other hydrating components to support skin barrier function and soothe dryness.

This toner is suitable for all skin types, particularly for those with sensitive, dehydrated, or easily irritated skin. Its pH-balanced formulation helps restore the skin’s natural acidity after cleansing, creating an optimal environment for subsequent skincare steps. The lightweight, watery texture absorbs quickly without leaving residue, making it comfortable for daily use, including under makeup or sunscreen.

Key features include: alcohol-free composition (no drying alcohols), vegan certification, and absence of artificial fragrances or harsh additives. The product aims to provide deep yet gentle hydration, improving skin’s moisture retention over time. It can be applied by patting onto clean skin or using a cotton pad for a refreshing layer.

Consistent use may help reduce tightness and flakiness associated with dry or sensitive skin, while supporting a smoother, more supple complexion. As a hydrating toner from a Korean skincare brand, it aligns with routines that prioritize barrier-friendly, non-irritating ingredients. The 200ml bottle offers a generous size suitable for regular use.