Isntree Hyper Acid 4 AHA BHA PHA LHA 30 Serum 20mL

Isntree Hyper Acid 4 is a concentrated rinse-off exfoliant with a combined 30% acid blend. AHA, BHA, PHA and LHA offer complementary exfoliating care for the skin’s surface and the appearance of congestion. Its serum format and dropper bottle do not make it a product to leave on overnight.

Apply it after cleansing, keep away from the eyes and lips, and rinse thoroughly with lukewarm water after one minute. The recommended frequency is one to two times weekly, adjusted to skin tolerance. This short-contact treatment belongs before your hydrating skincare, and daily sunscreen is an important part of a routine that includes exfoliating acids.

Four acid types in a short-contact exfoliant

Hyper Acid 4 combines water-soluble and oil-soluble exfoliating ingredients rather than relying on abrasive scrub particles. The formula is designed for brief contact followed by a full rinse. Its high acid concentration makes the product’s timing, application area and gradual introduction just as important as the ingredients inside the bottle.

• 30% combined acid blend: The blend includes 15.3% AHA, 0.1% BHA, 14.61% PHA and 0.01% LHA. These are combined acid percentages, not 30% of each acid.
• AHA surface care: Lactic, glycolic and citric acids work within the formula’s surface-exfoliating approach, helping address rough-feeling texture and dull-looking buildup.
• BHA and LHA: Salicylic acid and capryloyl salicylic acid complement the AHA and PHA components, supporting care for the appearance of pores and congestion.
• PHA and conditioning support: Gluconolactone is joined by glycerin, niacinamide and allantoin, bringing moisture and skin-conditioning ingredients to the exfoliating formula.
• Distinctive rinse-off texture: Charcoal powder gives the serum its dark appearance. The medium-viscosity liquid is dispensed in drops and removed with water after its short contact time.

Smoother texture with a clearly defined rinse-off step

The purpose of this formula is to help remove surface buildup and leave skin looking clearer and feeling smoother. Its concentrated format is best approached as an occasional treatment, not as a daily hydrating serum. More product or a longer contact time does not improve the recommended routine.

• Smoother-feeling surface: Chemical exfoliation helps loosen dead surface skin cells that can contribute to roughness, making skin feel more even after rinsing.
• Fresher-looking pores: The combined acid approach helps improve the appearance of congestion and excess oil, without using a gritty mechanical scrub.
• Less dull-looking skin: Removing surface buildup can reveal a fresher-looking complexion and support a more even-looking texture as part of a consistent routine.
• Brief treatment time: The one-minute application creates a defined exfoliation step before gentle hydration. Thorough rinsing and appropriate frequency help keep the routine controlled.

You Get:

• 1 × Isntree Hyper Acid 4 AHA BHA PHA LHA 30 Serum 20mL