# Isntree Hyper Acid 4 (AHA BHA PHA LAH) 30 Serum 20ml

The Original Korean Formula serum from Isntree, 20ml formulated with Salicylic Acid and Niacinamide, shipped from California or direct from Korea.

- Brand: Isntree
- Product: Hyper Acid 4 (AHA BHA PHA LAH) 30 Serum 20ml
- Price: $15.00
- Availability: In stock
- Size: 20 ml
- Market: Korean market, the version sold in Korea
- Made in: Republic of Korea
- EAN (barcode): 8809800940880
- Category: Serums & Ampoules

## Key benefits

- Salicylic Acid, the exfoliant this serum is built around
- Niacinamide and Allantoin on the same list, actives
- Gluconolactone and Lactic Acid on the same list, exfoliants
- Glycolic Acid and Capryloyl Salicylic Acid further down the same list
- Salicylic Acid named sixteenth on the manufacturer list printed on this page
- The Korean-market release of this serum, confirmed against its Korean barcode

## How it works

The Hyper Acid 4 (AHA BHA PHA LAH) 30 Serum is a 20ml serum, used after toner and before moisturizer, morning and evening. The exfoliant it is built around is Salicylic Acid, named sixteenth on its own ingredient list. The same list carries Niacinamide, Allantoin and Gluconolactone, so the exfoliant is not the only thing on it worth naming. How much of the Salicylic Acid stays on the skin, and for how long, is decided by the serum format rather than by the list alone. This is the Original Korean Formula, the serum Isntree sells in Korea, Salicylic Acid and all.

## How to use

1. Start at two nights a week and only increase if the skin stays completely comfortable.
2. Apply a thin layer to clean dry skin, concentrating on the rougher areas rather than the whole face.
3. Follow with a plain moisturiser afterwards so the surface is not left bare.
4. Do not use it on the same night as a retinoid or another acid, since stacking is what turns a routine sore.

## Ingredients

Water, Gluconolactone (14.87%), Lactic Acid (10.12%), Methylpropanediol, Glycolic Acid (4.9%), Potassium Hydroxide, 1,2-Hexanediol, Diethoxyethyl Succinate, Glycerin, Xanthan Gum, Polyglyceryl-10 Laurate, Acacia Senegal Gum, Polyglyceryl-10 Myristate, Glyceryl Caprylate, Niacinamide, Salicylic Acid (0.1%), Allantoin, Disodium EDTA, Ethylhexylglycerin, Peat Water, Citric Acid (0.02%), Hydroxypropyl Methylcellulose, Capryloyl Salicylic Acid (0.01%), Butylene Glycol, Potassium Sorbate, Charcoal Powder

## FAQ

### Where does this serum go in my routine?

After toner and before moisturizer, morning and evening. Anything thinner than a serum goes on before it, and anything richer goes on after. If you are adding it to a routine you already like, give it a week on its own first, so what you see is the Salicylic Acid and not three changes at once.

### Is this the Korean-market serum or a US version?

The Korean-market one, Salicylic Acid and all. We match this serum to its Korean barcode before it reaches the shelf, which is the check that tells you which market release you are holding.

### What else is on the list besides Salicylic Acid?

Niacinamide, Allantoin and Gluconolactone. The order they are printed in on this serum's panel is the order on the box, so you can see where Salicylic Acid sits relative to them. Further down the same panel: Lactic Acid, Glycolic Acid and Capryloyl Salicylic Acid.

---

Page: https://korean-pharmacy.com/products/isntree-hyper-acid-4-aha-bha-pha-lah-30-serum-20ml