---
title: Alpha Arbutin
entity_type: Ingredient
canonical_url: https://skinknowledgebase.com/ingredients/alpha-arbutin
date_modified: 2026-05-18
date_reviewed: 2026-05-18
mcp_eligible: true
evidence_sources:
  - title: Sephora Product Page — The Ordinary Alpha Arbutin 2% + HA
    canonical_citation_url: https://skinknowledgebase.com/sources/sephora-product-page-the-ordinary-alpha-arbutin-2-ha
    original_source_url: https://www.sephora.com/product/the-ordinary-deciem-alpha-arbutin-2-ha-P427412
    source_type: retailer_product_page
product_fact_sources:
  - title: Official Product Page — The Ordinary Alpha Arbutin 2% + HA
    canonical_citation_url: https://skinknowledgebase.com/sources/official-product-page-the-ordinary-alpha-arbutin-2-ha
    original_source_url: https://theordinary.com/en-us/alpha-arbutin-2-ha-serum-100401.html
    source_type: official_product_page
---

# Alpha Arbutin

## Quick Summary

Alpha arbutin is a brightening-positioned skincare ingredient used in cosmetic formulas for dark-spot appearance and uneven-looking tone support. In The Ordinary Alpha Arbutin 2% + HA, it is the named lead ingredient in a water-based serum with hydrolyzed sodium hyaluronate and propanediol support.

## What It Is

Alpha arbutin is a cosmetic brightening ingredient commonly discussed in routines for facial hyperpigmentation appearance, post-blemish mark appearance, and uneven-looking tone. The Ordinary product page names alpha-arbutin directly in the INCI and positions the product around uneven skin and dark spots. This ingredient page keeps the framing consumer-friendly: alpha arbutin is a tone-appearance ingredient, not a diagnosis tool or a prescription pigmentation treatment.

## Mechanism

For SKB’s cosmetic language, alpha arbutin belongs in the brightening and dark-spot appearance category. It is often paired with hydration or delivery-support ingredients because many leave-on serums need a comfortable water-based base. In this product, hydrolyzed sodium hyaluronate supports hydration feel, while propanediol and other formula ingredients support texture and solvent context. Sunscreen remains important in any daytime hyperpigmentation-appearance routine because UV exposure can keep uneven pigment looking more visible.

## Related Entities

- [Official Product Page — The Ordinary Alpha Arbutin 2% + HA](https://skinknowledgebase.com/sources/official-product-page-the-ordinary-alpha-arbutin-2-ha)
- [Sephora Product Page — The Ordinary Alpha Arbutin 2% + HA](https://skinknowledgebase.com/sources/sephora-product-page-the-ordinary-alpha-arbutin-2-ha)
- [Melasma](https://skinknowledgebase.com/concerns/melasma)
- [The Ordinary Alpha Arbutin 2% + HA](https://skinknowledgebase.com/products/the-ordinary-alpha-arbutin-2-ha)
- [Dr. Idriss Major Fade Hyper Serum](https://skinknowledgebase.com/products/dr-idriss-major-fade-hyper-serum)
- [Beauty of Joseon Glow Deep Serum: Rice + Alpha-Arbutin](https://skinknowledgebase.com/products/beauty-of-joseon-glow-deep-serum-rice-alpha-arbutin)
- [Anua Niacinamide 10% + TXA 4% Serum](https://skinknowledgebase.com/products/anua-niacinamide-10-txa-4-serum)
- [Peace Out Dark Spots Serum](https://skinknowledgebase.com/products/peace-out-dark-spots-serum)