A hydrating prep toner with hyaluronic acid, beta-glucan and amino acids in a fragrance-free base. A gentle, plumping first step for sensitive and dehydrated skin; layers well in the K-beauty 'seven skins' style.
The verdict
What this is good for
✓ Great forDehydrationSensitivityDryness
The formulation
Ingredient stack
Each ingredient is listed in descending concentration. Above the 1% line the order is regulated — below it, brands can list in any order.
Ingredients above the dashed gold line are dosed above 1% (the regulatory threshold) — these are what the formulation is really built on. Percentages are positional estimates from INCI order unless a brand discloses them.
A humectant that binds water in the upper skin layers for immediate plumping and hydration. Multi-weight forms reach different depths. Apply to damp skin and seal with moisturiser, especially in dry climates.
A soothing polysaccharide and humectant that calms reactive skin and supports barrier recovery — 2026's barrier-repair hero, with rising clinical interest.
The closest active-matched alternative is the Isntree Hyaluronic Acid Toner (70% active overlap). We found 2 options that share this product’s hero actives.
Skin Stacker is independent and receives no payment from any brand. Ingredient analysis is based on publicly disclosed INCI lists and the peer-reviewed literature. Percentages are positional estimates from INCI order unless a brand discloses them. Formulations change — always re-check the label on your specific batch before using.