ALPHA-ARBUTIN BRIGHTENING SERUM
A brightening serum built on Alpha-Arbutin for the appearance of dark spots and uneven tone. Alpha-Arbutin is studied in cosmetics for the appearance of dark spots, while Bidens Pilosa lends botanical support and multi-weight hyaluronic acid hydrates and helps smooth the look of skin.
Backed by published research · references belowContains fragrance (Parfum). Full ingredients
Arrives in 4 to 7 business days in the US, 6 to 9 in the UK and up to 8 in France. UK orders may owe customs fees on delivery. This item ships free, as does every order of $100 or more. Read the returns policy
Formulated for Anti-Aging, Darker Skin Tones, Hyperpigmentation, and Dry Skin.
- Alpha-Arbutin, a biotech-derived form of arbutin, is studied in cosmetics for the visible appearance of dark spots and uneven tone1.
- Bidens Pilosa Extract, an RXR-pathway brightening botanical studied in a fixed-combination cream for skin condition2.
- Multi-weight Hyaluronic Acid (Hydrolyzed Hyaluronic Acid plus Sodium Hyaluronate), a humectant that hydrates at the surface and helps smooth the look of skin3.
Hero ingredient: Alpha-Arbutin, documented in cosmetic literature for the appearance of dark spots and the look of a more even tone. Full mechanism and citations under Details and references.
A 30 ml / 1.01 fl oz leave-on face serum built around Alpha-Arbutin, studied in cosmetics for the appearance of dark spots and uneven tone, with Bidens Pilosa Extract, Ascophyllum Nodosum (Norwegian Kelp) Extract, and multi-weight Hyaluronic Acid. 100% natural origin, 23% organic origin, vegan.
Alpha-Arbutin, Bidens Pilosa Extract, Ascophyllum Nodosum (Norwegian Kelp) Extract, Astrocaryum Murumuru Seed Butter, Helianthus Annuus (Sunflower) Seed Oil, Multi-Weight Hydrolyzed Hyaluronic Acid + Sodium Hyaluronate.
Active ingredients: Alpha-Arbutin (the hero of the formula, studied for the appearance of dark spots), Bidens Pilosa Extract (a supporting botanical), Ascophyllum Nodosum (Norwegian Kelp) Extract (an antioxidant marine botanical).
Aqua, Glycerin, Caprylic/Capric Triglyceride, Helianthus Annuus (Sunflower) Seed Oil, Pentylene Glycol, Cetearyl Alcohol, Sodium PCA, Glyceryl Stearate Citrate, Alpha-Arbutin, Astrocaryum Murumuru Seed Butter, Gossypium Herbaceum Seed Oil, Bidens Pilosa Extract, Cellulose, Linum Usitatissimum Seed Oil, Parfum, Xanthan Gum, Ascorbyl Palmitate, Lactic Acid, Ascophyllum Nodosum Extract, Sodium Phytate, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Tocopherol, Limonene, Citrus Limon Peel Oil, Pogostemon Cablin Oil, Linalool, Juniperus Virginiana Oil, Cedrus Atlantica Oil/Extract, Pinene, Vanillin, Menthol, Citral, Beta-Caryophyllene
The ingredient list printed on your product’s packaging is always definitive; where it differs from this page, the packaging prevails.
- Apply two to three drops to clean skin morning and evening, after toner and before moisturiser.
- Apply broad-spectrum SPF 30 or higher daily. Brightening actives may increase photosensitivity, so daily UV protection is advised during use.
- Layer compatibly under moisturiser or other leave-on actives.
What are the potential side effects of using Bidens pilosa?
It contains Bidens Pilosa Extract from the Asteraceae (daisy) plant family. Individuals who know they react to plants in this family (ragweed, chamomile, arnica, chrysanthemum, marigold, echinacea) may be at higher risk of a reaction and should avoid.
What does alpha arbutin do to skin?
Alpha-Arbutin is a biotech-derived cosmetic ingredient studied for the appearance of a more even skin tone and a reduced look of dark spots.
How do I use it?
Apply two to three drops to clean skin morning and evening, after toner and before moisturiser. Apply broad-spectrum SPF 30 or higher daily.
What is the correct way of applying serum?
Apply serum to clean skin, after toner and before moisturiser. For this one, that means two to three drops morning and evening, with your moisturiser or any other leave-on active layered on top. In the morning, finish with a broad-spectrum SPF 30 or higher, which is advised daily while you use it.
100% natural origin, 23% organic origin, vegan. Contains Bidens Pilosa Extract from the Asteraceae (daisy) plant family. Individuals who know they react to plants in this family (ragweed, chamomile, arnica, chrysanthemum, marigold, echinacea) may be at higher risk of a reaction and should avoid. A 24-hour patch test on the inner forearm is recommended before facial use. Contains naturally occurring fragrance compounds (Limonene, Linalool, Citral, Pinene, Menthol, Beta-Caryophyllene, Vanillin). Discontinue if persistent stinging, irritation, or peeling occurs.
Alpha-Arbutin is a biotech-derived form of arbutin documented in cosmetic literature for the appearance of dark spots and the look of a more even tone1. Bidens Pilosa Extract, a botanical, combined with andrographolide, improved skin elasticity and hydration in a human clinical trial2. Multi-weight hyaluronic acid provides surface and penetrating humectant support, with molecular-weight-dependent skin penetration documented in the literature3.
- Tantanasrigul P, Sripha A, Chongmelaxme B. The Efficacy of Topical Cosmetic Containing Alpha-Arbutin 5% and Kojic Acid 2% Compared With Triple Combination Cream for the Treatment of Melasma: A Split-Face, Evaluator-Blinded Randomized Pilot Study. Journal of Cosmetic Dermatology. 2025;24(1):e16562. DOI 10.1111/jocd.16562. PubMed PMID 39555866. Tested as a cream combining alpha-arbutin 5% with kojic acid 2%, not alpha-arbutin alone, in a 30 participant pilot study.
- Ye S, Lee S, Kang S, Jun SH, Kang NG. Improvement of Skin Condition Through RXR Alpha-Activating Materials. Biomolecules. 2025;15(2):296. DOI 10.3390/biom15020296. PubMed PMID 40001599.
- Pavicic T, Gauglitz GG, Lersch P, et al. Efficacy of cream-based novel formulations of hyaluronic acid of different molecular weights in anti-wrinkle treatment. Journal of Drugs in Dermatology. 2011;10(9):990-1000. PubMed PMID 22052267.
How to cite this product page: Opuliss. Alpha-Arbutin Brightening Serum. Opuliss Skin product page. 2026. https://opuliss.com/products/pigment-perfecting-serum
The Science
Alpha-Arbutin is a biotech-derived cosmetic ingredient studied for the appearance of a more even skin tone and a reduced look of dark spots.
Source: Tantanasrigul P, et al. Journal of Cosmetic Dermatology, 2025 (PMID 39555866).
INSIDE THE SCIENCE
From precision-fermented actives to biomimetic complexes, discover what makes it Opuliss.
ALPHA-ARBUTIN
A biotech-derived form of arbutin, studied for the appearance of dark spots and a more even-looking tone, in a cream pairing 5% alpha-arbutin with 2% kojic acid. The EU allows up to 2% alpha-arbutin in face products.
Source: Tantanasrigul P, et al. Journal of Cosmetic Dermatology, 2025 (PMID 39555866).
BIDENS PILOSA
A plant-based retinol alternative. Tested on its own in the lab, it gave a small rise in the activity of RXR alpha, a receptor retinol also works through, without activating the receptor linked to retinol irritation.
Source: Ye S, et al. Biomolecules, 2025 (PMID 40001599).
NORWEGIAN KELP
Mineral-rich kelp that hydrates and replenishes the skin.
Source: Yu G, et al. International Journal of Biological Macromolecules, 2020 (PMID 32135255).
HOW TO USE
Apply two to three drops to clean skin morning and evening, after toner and before moisturiser.
Apply broad-spectrum SPF 30 or higher daily. Brightening actives may increase photosensitivity, so daily UV protection is advised during use.
Layer compatibly under moisturiser or other leave-on actives.
THE TEXTURE
The Opuliss difference
SCIENCE, MADE VISIBLE
Opuliss begins where the research ends. Every active is named, every claim is traceable, and nothing is left to promise alone.
Morning to night
A RITUAL, CONSIDERED
Each formula stands on its own and belongs to the whole. Layered with intention, morning and night, the routine becomes unmistakably yours.
A twenty four hour rhythm
THE SKIN KEEPS TIME
Skin is not the same at midnight as it is at nine in the morning. Across a single day its temperature, its acidity and the moisture it loses to the air each move on a rhythm of their own. Morning and night are not two routines. They are one, kept in time.
Yosipovitch G et al. Journal of Investigative Dermatology, 1998 (PMID 9424081). Sixteen volunteers sampled every two hours across a twenty four hour span.
