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Functional / Support

Methylpropanediol

Often labeled as: Penetration Solvent

The invisible carrier that boosts hydration.

๐Ÿ›ก๏ธ
Overall Safety Safe
๐Ÿ‘ถ
Pregnancy Safety Safe
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Comedogenic (0-5) 0 / 5
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Irritancy (0-5) 0 / 5

๐Ÿ”ฌ How It Actually Works

A synthetic glycol used as a solvent. It drastically improves the penetration of active ingredients (like Salicylic Acid) into the skin while providing a dewy, hydrating finish.

๐Ÿ’– Why your skin loves it

Enhances product efficacy, boosts hydration, and leaves a glowing finish.

๐Ÿ’ก Pro Tip

Often works synergistically with Caprylyl Glycol to boost preservation.

โš–๏ธ Myth vs. Fact

The Myth

It is a harsh chemical filler.

The Science

It is a highly functional ingredient that makes the active ingredients actually work.

๐Ÿงด Formulations featuring Methylpropanediol

โ˜… 9.1
Skin Perfecting 2% BHA Liquid Exfoliant
Paula's Choice
Skin Perfecting 2% BHA Liquid Exfoliant
Exfoliant

The global gold standard of BHA exfoliants. It utilizes Methylpropanediol as a brilliant penetration enhancer, allowing the 2% Salicylic Acid to dive deep into the pore lining to dissolve oxidized sebum. It is incredibly effective but can leave a slightly tacky finish on the skin.

โ˜… 9.3
Heartleaf 77% Soothing Toner
Anua
Heartleaf 77% Soothing Toner
Toner

The absolute gold standard for calming reactive skin layouts. Instead of a water base packed with synthetic thickeners, it replaces 77% of the bottle with pure Houttuynia Cordata (Heartleaf) extract. Heartleaf contains natural quercitrin compounds that immediately restrict vascular swelling and down-regulate heat inside the skin layers. It feels exactly like pure, light water and absorbs instantly with zero tackiness, acting like a cooling, anti-inflammatory splash. It works miracles for calming active, angry acne breakouts and cooling down skin flushed by tropical heat, but holds minimal lipid value for dry skin types.

โ˜… 9.4
CeraGlow Gel Moisturizer
Dr Anne
CeraGlow Gel Moisturizer
Moisturizer

A highly advanced gel moisturizer designed specifically for oily and acne-prone skin types. It utilizes a highly effective 3 percent Niacinamide concentration alongside Ceramides to strengthen the barrier without suffocating the pores. The unique inclusion of Crocus Chrysanthus bulb extract acts as an advanced botanical growth factor to maintain skin firmness safely. It completely bypasses heavy occlusive waxes.

โ˜… 9.0
Rice Toner
I'm From
Rice Toner
Toner

A highly elegant, biphasic (two-layer) milky toner. It combines 77.78% rice extract water with a top layer of emollient lipids. When shaken, it creates a deeply moisturizing fluid that instantly softens dry, flaky skin and delivers a noticeable 'glass skin' glow. It is richer than a standard watery toner.

โ˜… 9.6
Prebiotic Hydra Plus Essence Water
Aiken
Prebiotic Hydra Plus Essence Water
Toner

A breathtakingly loaded drugstore essence. Aiken impressively packed 8 distinct molecular weights of Hyaluronic Acid, Niacinamide, Betaine, Ceramide NP (Ceramide 3), and an advanced prebiotic microbiome complex into a single affordable water. Because it incorporates extremely light silicones and emollient esters, it acts almost like a liquid moisturizer, creating an instant silky seal that locks water into the stratum corneum.