Brightening serum for stubborn dark spots, with Alpha-Arbutin and Tranexamic Acid.
- A BIOSAR range
- Whitepurity
- Size
- 30 ml
- When
- Morning and evening
Suits
The intensive PM treatment for stubborn dark spots and dull, uneven tone.
Key actives
- Dermatologically tested
- Made to GMP (ISO 22716)
How Whitepurity Whitening Serum works
Whitepurity Serum is BIOSAR's high-concentration serum for stubborn uneven tone. Alpha-Arbutin, Tranexamic Acid, and Niacinamide work on three pigmentation pathways at once; Vitamin C brightens for faster visible response, while Hyaluronic Acid and Peptides keep the texture comfortable on daily use. Licorice Extract supports a calmer surface for reactive areas. Introduce it gradually — three nights a week for two weeks, then build up to morning and night — for melasma, post-inflammatory hyperpigmentation, dark patches, and dullness. Always pair with a daily SPF30+. Pigmentation will rebound without sun protection. Tolerance-tested under dermatological supervision. Pairs with the Whitepurity Cream SPF30+.
Triple-action tone
Alpha-Arbutin, Tranexamic Acid, and Niacinamide target three pigmentation pathways.
Faster radiance
Vitamin C brightens for a faster visible response on dullness.
Calmer surface
Licorice Extract supports a calmer surface on reactive areas.
Comfortable daily wear
Hyaluronic Acid and Peptides keep the texture comfortable morning and night.
What the research says
One test of this product, then published studies on its ingredients. Those studies are not tests of this product, and results vary from person to person.
- 1 test of this product
- 3 published studies on its ingredients
- This product
10 adults · 48 h
Consumer perception study
48-hour patch test on 10 adult volunteers, scored by a dermatologist: no reaction in any of them.
- Ingredient study · 12 weeks
Fine lines, spots and sallowness improved vs vehicle
A double-blind split-face trial by the moisturiser's maker, in 50 women with photoaged facial skin: a niacinamide moisturiser used twice daily for 12 weeks reduced fine lines, spots, red blotchiness and sallowness versus its vehicle.
Read on PubMed - Ingredient study · 6 months
Photoaged skin improved against the placebo side
A 6-month double-blind study in women with sun-aged skin on the low neck and arms: the side treated daily with a vitamin C cream improved on the overall photoaging score, with denser skin relief and shallower furrows than the placebo side.
Read on PubMed - Ingredient study · 8 weeks
Eye-area hydration up, wrinkle depth down vs baseline
In 33 women, a low-molecular nano-hyaluronic acid lotion, serum and cream used for 8 weeks raised eye-area hydration by up to 96% and reduced wrinkle depth by up to 40% against baseline. Best-case figures; no control group.
Read the study
How to use Whitepurity Whitening Serum
Morning
Apply three drops to clean skin. Allow to absorb before moisturizer and sunscreen.
Evening
Repeat the morning step. May be layered with the Whitepurity Cream for sensitive areas.
Before first use, try it on a small area of skin. While using it, wear sunscreen during the day, and stop if irritation persists.
Where it fits in a routine
What to expect
Week 1–2
Fresher, brighter surface
Skin looks brighter, smoother and more refreshed as the surface renews and light reflects more evenly.
Week 3–4
Dark spots fade
Discoloration and post-blemish marks visibly lighten as the multi-active brighteners work together.
Week 4–8
Even, luminous tone
A clearer, more uniform, radiant complexion — brightness you can genuinely see.
Results vary from person to person.
What's inside
The key actives by type, then the full ingredient list.
Actives
- Alpha-Arbutin
- Stable tyrosinase inhibitor.
- Hyaluronic Acid
- Humectant that binds many times its weight in water — one of the most effective hydrators available for topical use.
- Tranexamic Acid
- Amino acid derivative that targets stubborn pigmentation pathways.
- Peptides
- Short chains of amino acids that act as messengers in the skin.
- Lactic Acid
- It loosens bonds between surface cells to ease gentle exfoliation while drawing in moisture for a smoother look.
Botanical extracts
- Licorice
- Its glabridin helps moderate the look of excess pigment, supporting a more even, brighter-looking tone.
Vitamins
- Niacinamide
- Vitamin B3.
- Vitamin C
- Antioxidant that helps neutralize free radicals and supports a more radiant complexion.
- Panthenol
- Provitamin B5 that supports the skin's repair and hydration signals.
Full ingredient list (INCI), 34 ingredients
Aqua, Niacinamide, Alpha-Arbutin, Propylene Glycol, 3-O-Ethyl Ascorbic Acid, Pentylene Glycol, PEG-12 Dimethicone, Phenoxyethanol, Panthenol, Hydroxyethylcellulose, Lactic Acid, Glycyrrhiza Glabra Root Extract, Allantoin, Tranexamic Acid, Polysorbate 20, Ethylhexylglycerin, Palmitoyl sh-Octapeptide-24 Amide, Parfum, Xanthan Gum, Tetrasodium EDTA, Polyvinyl Alcohol, Palmitoyl sh-Tripeptide-5 Norisoleucyl sh-Nonapeptide-1, Lactic Acid/Glycolic Acid Copolymer, Sodium Hyaluronate Crosspolymer, Propanediol, Hydrolyzed Glycosaminoglycans, Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Hyaluronic Acid, Glycerin, Caprylyl Glycol, Glyceryl Caprylate, Phenylpropanol, Sodium Hydroxide.
This is the current formula. Older packs may show a different list.
Formulated without mineral oils, formaldehyde releasers and synthetic dyes.
Questions about Whitepurity Whitening Serum
Can I use the Whitepurity Serum if my skin is reactive?
The serum contains multiple actives at meaningful concentrations. Introduce gradually — three nights per week for two weeks, then increase if tolerated. Pair with the Sensimed cleanser on sensitive days.
How long does it take to see results for stubborn uneven tone?
Visible improvement in stubborn uneven tone typically takes eight to twelve weeks of consistent use. Alpha-Arbutin and Tranexamic Acid work gradually to support a more even-looking complexion. Daily sun protection helps preserve your progress. Results build steadily, so consistency matters more than speed.
When should I apply the Whitening Serum, and do I need sunscreen?
Apply Whitening Serum in the morning and evening, after cleansing and before moisturizer. Smooth a few drops onto clean skin and let it absorb fully. Daily sunscreen use each morning helps support your brightening results. Skipping sun protection can slow visible progress.
Will the acids in the Whitening Serum irritate my skin?
This serum contains Lactic and Glycolic Acid, so gentle introduction matters. Patch-test on your inner arm for twenty-four to forty-eight hours before first full use. Start two to three times weekly, increasing gradually as tolerated. Panthenol and Vitamin E help support comfort throughout the routine.
Who is the Whitening Serum best suited for?
Whitening Serum suits skin with stubborn, visibly uneven tone and dullness. Niacinamide and Vitamin C support a brighter, more even-looking complexion over time. It works well for those seeking a targeted tone-correcting step. Sensitive skin should introduce it gradually and patch-test first.
Where to find Whitepurity Whitening Serum
BIOSAR is sold in pharmacies through licensed partners in Saudi Arabia, Iraq, Yemen, Lebanon, Palestine, Qatar, Nepal and Bangladesh, and under a local name in Algeria.
In this range
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Whitepurity50 ml
Whitening Cream SPF30+
Alpha-Arbutin · Niacinamide · Vitamin C
Whitepurity60 ml
Whitening Cream for Sensitive Areas
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Last reviewed by BIOSAR Scientific Team on .
Claims & methodology
- Reduces the appearance of dark spots and corrects uneven tone — Consumer perception study. Study on file at BIOSAR Laboratories.
Published references
- Dermatol Surg 2005 (Bissett, Oblong, Berge). pubmed.ncbi.nlm.nih.gov/16029679/
- Exp Dermatol 2003 (Humbert). pubmed.ncbi.nlm.nih.gov/12823436/
- J Clin Aesthet Dermatol 2014. pmc.ncbi.nlm.nih.gov/articles/PMC3970829/