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Isntree

Isntree Chestnut BHA 0.9% Clear Toner

Ingredient analysis and how the ad lines read

Product photo of Isntree Chestnut BHA 0.9% Clear Toner

Read on 2026-09-06

What is this product?

Pick this 200ml toner for gentle daily BHA care on oily, clog-prone skin, and skip it if you want proven numbers: Isntree puts 0.9 in the product name but never says what that figure measures, and publishes no pH and no test for it. The exfoliant is betaine salicylate, a salicylic acid derivative designed to release the acid more slowly and sting less than the free acid, in a humectant base whose transcribed ingredient list carries no added fragrance. Isntree's own product page does not print the full ingredient list; everything known about the formula comes from a third-party transcription, and the Korean label list remains unpublished on the pages collected.

What makes it different?

Within exfoliating toners it sits on the gentle end by design: betaine salicylate trades potency for tolerance, and Isntree itself warns of possible first-use tingling because BHA chemistry works best around pH 3.5 to 4.0, a value it does not publish for this formula. The same Clear line offers an AHA 8 essence the brand says can be layered with it, splitting surface exfoliation from pore care. Isntree publishes no functional-cosmetic notice and no clinical test for it, and the storefront scores that do exist are small self-selected counts, so buy it on mechanism, not on evidence.

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Each name links to what we know about that ingredient.

Worth a closer look

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

Did the ad claims hold up?

We checked 5 lines this product advertises against the ingredient list and public documents. 4 of them look likely, though none are proven outright.

Claims translated from Korean, originals preserved.

likely, not proven4

  • #BHA #DeadSkinCellControl #SebumControl
    Korean original

    #BHA #각질정돈 #피지정돈

  • BHA toner contains betaine salicylate, a lipophilic ingredient, making it suitable for those with oily skin who need pore care due to excessive sebum secretion or who want to gently remove old sebum.
    Korean original

    바하 토너는 지용성 성분인 베타인 살리실레이트가 함유되어 있어, 과도한 피지 분비로 모공 케어가 필요하거나 묵은 피지를 부드럽게 제거하고 싶은 지성 피부를 가지신 분께 적합한 제품입니다.

  • We used betaine salicylate, which is less irritating than regular BHA products that use salicylic acid, but
    Korean original

    살리실릭애씨드를 사용하는 일반 BHA 제품보다 자극이 적은 베타인살리실레이트를 사용하였으나

  • Because BHA exhibits optimal effect when pH is 3.5~4.0, there may be slight stinging on mildly acidic skin upon first use.
    Korean original

    BHA는 pH가 3.5~4.0일 때 최적의 효과를 나타내기 때문에 약산성인 피부에는 처음 사용시 약간의 따가움이 있을 수 있습니다.

overstated ad line1

  • BHA is a lipophilic ingredient that easily penetrates deep into the skin, providing excellent sebum removal inside pores.
    Korean original

    BHA는 지용성 성분으로 피부 깊숙이 침투가 용이하여 모공 속 피지 제거 효과가 우수합니다.

Each line is quoted as the brand published it, and each one was read on its own against the ingredient list and the documents the brand publishes.

How we read these lines

What else is worth seeing?

Products we read alongside this one.

Which articles cover it?

Articles on this site that write about this product.