Isntree Hyaluronic Acid Low-pH Cleansing Foam: Hydration-Forward Cleanser

Low-pH cleansers are one of K-beauty's most significant contributions to modern skincare: the insight that skin cleansers matched to skin pH (4.5 to 5.5) avoid the barrier disruption that standard alkaline cleansers cause. Isntree's Hyaluronic Acid Low-pH Cleansing Foam delivers that low-pH cleanse with added hyaluronic acid and glycerin for hydration support during the cleansing window.

At 150ml for $33, this is mid-range for a Korean low-pH cleanser. The value sits in the formulation quality (Isntree is respected for clean ingredients) and the HA addition. Comparable products at this price tier include Torriden DIVE-IN Cleansing Foam and Beauty of Joseon cleansers; all are in the same quality ballpark.

What It Does

The surfactant system at pH 5.5 cleans effectively without stripping the acid mantle. Hyaluronic acid remains on the skin after rinsing, providing immediate post-cleanse hydration. Glycerin supports barrier function. The foam rinses cleanly with no residue, leaving skin hydrated rather than tight. The cleanse is sufficient for second-cleanse use after an oil or balm, or for morning-only cleansing as a standalone.

Who It's For

• Dry or dehydrated skin: Primary use case. Non-stripping.
• Sensitive skin: Low-pH is barrier-friendly.
• Daily cleanser for all skin types: Well-tolerated broadly.
• Double-cleanse routines: Good second cleanse.
• HA enthusiasts: Brand's HA line has a strong following.

Key Specs

• Volume: 150ml
• Price: $32.68
• pH: approximately 5.5
• Hero actives: hyaluronic acid complex, glycerin, gentle surfactants
• Texture: foam cleanser, dense lather
• Fragrance: very mild or fragrance-free

How to Use

Wet face with lukewarm water. Dispense a pea-sized amount into hands, lather with water to build foam, apply to damp skin in circular motions for 30 to 60 seconds. Rinse thoroughly. Pat dry and proceed with toner. For double cleanse, use after an oil or balm cleanser.

FAQ

Low-pH cleanser, why does it matter?

Skin pH is 4.5 to 5.5. Cleansers at pH 8 to 10 (most drugstore foams) strip the acid mantle, causing post-cleanse dryness, irritation, and barrier weakness. Low-pH cleansers (5 to 6) avoid this. The difference is real and significant, especially for sensitive or dry skin.

Will it clean makeup off?

Standard makeup yes. Heavy or waterproof makeup needs an oil or balm first. The HA cleanser is a second-cleanse product for evenings.

How does it compare to Cerave Hydrating Cleanser?

Cerave Hydrating is non-foaming, creamier, slightly more moisturizing. Isntree HA is foam-based, lighter, slightly more active cleanse. For very dry skin, Cerave. For normal to oily with HA preference, Isntree.

Is it okay for acne-prone skin?

Yes. The formula is non-comedogenic and gentle. HA does not trigger acne.

Fragrance?

Very mild or fragrance-free depending on formulation batch. Fragrance-sensitive users tolerate it well.

Related Products

Pair with Isntree C-Niacin Toning Cream for the moisturizer step.

Browse the full Isntree collection or related: Korean cleansers, low-pH cleansers.