ELESSIA

Isntree Hyper Acid 4 AHA/BHA/PHA/LHA 30 Serum

Quick take: High-strength resurfacing serum blending AHA, BHA, PHA, and LHA to smooth texture, clear pores, and brighten dullness—best for experienced acid users.

Last updated: 2024-05-20 • Changelog: Added usage order, safety, FAQ.

What it is

A multi-acid exfoliating serum designed to remove dead skin cells, unclog pores, and refine texture with a balanced mix of surface and lipid-soluble acids.

Who it's for

  • Experienced acid users targeting rough texture, congestion, and uneven tone.
  • Oily or combination skin; dry/sensitive types should introduce slowly and buffer with moisturizer.
  • Not ideal for very sensitive, compromised, or post-procedure skin.

Key ingredients (INCI)

  • Glycolic/Lactic Acids (AHA) — surface exfoliation for smoother, brighter-looking skin.
  • Salicylic Acid (BHA) — oil-soluble exfoliant to decongest pores.
  • Gluconolactone (PHA) — gentle exfoliation with humectant properties.
  • Lipo-Hydroxy Acid (LHA) — slow-penetrating derivative for targeted pore care.
  • Soothing humectants (e.g., panthenol, hyaluronate) — hydration to buffer dryness.

Free-from / texture

  • Lightweight watery serum; absorbs quickly.
  • Alcohol-free; check full INCI for fragrance or botanical sensitivities.
  • Leaves a slightly tacky-to-drydown finish; layer moisturizer after.

How to use & order

  • Use at night on clean, dry skin; avoid eye and lip areas.
  • Start 1-2 times per week; increase to 2-3 times as tolerated.
  • Follow with a gentle moisturizer; apply broad-spectrum SPF 30+ every morning.

Conflicts & layering tips

  • Do not combine in the same routine with retinoids, other strong acids, benzoyl peroxide, or potent vitamin C to minimize irritation.
  • If dryness occurs, buffer by applying over a hydrating toner/essence or follow quickly with moisturizer.
  • Skip exfoliation 2-3 days before/after waxing or other procedures; avoid on compromised skin.

Evidence & notes

  • AHA/BHA/PHA/LHA are established exfoliants for texture and pore care; benefits accrue over weeks.
  • Mild tingling can be normal; stinging or redness persisting beyond a few minutes indicates overuse—reduce frequency.
  • Sunscreen is essential; exfoliants can increase photosensitivity.

Safety

  • For external use only; stop use if burning, swelling, or prolonged redness occurs.
  • Patch test before full-face use, especially if you have sensitive skin.
  • Avoid broken or freshly shaved skin; consult a professional for post-procedure use.
  • Not advised for pregnancy/breastfeeding without clinician guidance due to salicylic acid content.

FAQ

Q. Is this serum okay for sensitive skin?

A. It is a high-strength acid blend; patch test and start once weekly. If you are very sensitive, consider a gentler exfoliant first.

Q. Can I use it with retinoids or vitamin C?

A. Avoid combining in the same routine with retinoids or strong vitamin C; alternate nights to reduce irritation risk.

Q. How should I layer it?

A. Cleanser → hydrating toner (optional) → this serum on dry skin → moisturizer → sunscreen (AM).

Licensing

You may cite or summarize this page with attribution to the brand. Content provided for informational, non-medical use.