Morning routine
Apply three drops to clean skin. Allow to absorb before moisturizer and sunscreen.
§I · FormulationFrom BIOSAR's Whitepurity range
Brightening Serum
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+.
- Alpha-Arbutin
- Niacinamide
- Vitamin CAscorbic Acid
- Hyaluronic AcidSodium Hyaluronate
Ten ranges
One philosophy
SFDA
Registered
GMP · ISO 22716
Standard
Why it works
The flagship that hits uneven tone from every angle at once. Alpha-Arbutin, Vitamin C, Niacinamide, Tranexamic Acid and Licorice strike discoloration across three complementary pathways while Lactic and Glycolic acids resurface and Hyaluronic Acid, Peptide and Panthenol replump for glass-like glow. Dark spots and dullness don't stand a chance — skin looks clearer and luminous in as little as 2 weeks.
- Alpha-Arbutin
- Niacinamide
- Vitamin C
- Hyaluronic Acid
- Tranexamic Acid
- Peptides
Proven Benefits
What this product does for your skin
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.
How the actives work together
Many brightening pathways in one drop, so tone clears from more than one angle
As the most concentrated expression in the range, this serum layers a wide spectrum of brightening actives so tone is addressed from several directions at once. Alpha-Arbutin, Vitamin C, Niacinamide, Tranexamic Acid, Licorice and Peptide each guide skin toward a clearer, more luminous finish, while Lactic Acid and Glycolic Acid refine the surface for smoother light. Their demanding side is met inside the same drop by Hyaluronic Acid and Panthenol, with Vitamin E supporting comfort, so intensity never turns into irritation. The result is a complete tone-correcting routine delivered in a single fast-absorbing layer.
Ingredient Research
Active ingredients backed by published studies
- 76%
76% of melasma users saw visibly more even tone
In a double-blind, placebo-controlled trial, 76% of women with melasma showed visible lightening and a more even skin tone after 8 weeks of twice-daily arbutin cream. Melanin in the treated spots was reduced too.
J Cosmet Dermatol 2015 (Morag et al.) — View research → - −62%
Fades stubborn dark patches by up to 62%
In an 8-week split-face trial in melasma, 4% niacinamide cut the MASI pigmentation score by 62% — comparable to hydroquinone but with fewer side effects. Good-to-excellent improvement was seen on 44% of the niacinamide-treated sides.
Dermatol Res Pract 2011 (Navarrete-Solís) — View research → - −34%
Visibly smoother, firmer, less-lined skin in 6 months
In a 6-month double-blind trial, daily 5% vitamin C cream cut the photoaging global score from 6.7 to 4.4 versus placebo, a 34% improvement. Deep furrows softened and skin microrelief density rose, leaving firmer, smoother texture.
Exp Dermatol 2003 (Humbert) — View research →
Results from published peer-reviewed studies on individual active ingredients. Individual product results may vary.
Transparency
What's inside — and what's not
- 01
Alpha-Arbutin
Alpha-Arbutin
Stable tyrosinase inhibitor. Interrupts the enzymatic step that produces excess melanin. Evens tone gradually without photosensitization.
- 02
Niacinamide
Niacinamide
Vitamin B3. Strengthens the skin barrier, helps calm visible redness, and supports balanced sebum. Multi-benefit active suitable for most skin types including sensitive.
- 03
Vitamin C
Ascorbic Acid
Antioxidant that helps neutralize free radicals and supports a more radiant complexion. Contributes to the appearance of even tone over time.
- 04
Hyaluronic Acid
Sodium Hyaluronate
Humectant that binds many times its weight in water — one of the most effective hydrators available for topical use. BIOSAR formulates it as 8D Hyaluronic Acid: eight molecular weights working together, from higher weights that hold water and plump the surface to lower weights that carry hydration into the deeper stratum corneum, so one layer hydrates at several depths at once.
- 05
Tranexamic Acid
Tranexamic Acid
Amino acid derivative that targets stubborn pigmentation pathways. Works alongside Alpha-Arbutin or Niacinamide for multi-pathway tone correction.
- 06
Peptides
Palmitoyl Tripeptide-1
Short chains of amino acids that act as messengers in the skin. In anti-aging formulas they support the signals behind firmness and elasticity, softening the look of fine lines for smoother, more resilient skin.
- 07
Vitamin E
Tocopherol
It neutralizes free radicals at the lipid layer, helping limit oxidative damage to formula and skin surface.
- 08
Panthenol
Panthenol (Provitamin B5)
Provitamin B5 that supports the skin's repair and hydration signals. Widely used in sensitive, post-procedure, and daily-care formulas.
- 09
Lactic Acid
Lactic Acid
It loosens bonds between surface cells to ease gentle exfoliation while drawing in moisture for a smoother look.
- 10
Glycolic Acid
Glycolic Acid
It weakens cohesion between surface cells, encouraging gentle exfoliation and visible surface renewal.
- 11
Licorice
Glycyrrhiza Glabra (Licorice) Root Extract
Its glabridin helps moderate the look of excess pigment, supporting a more even, brighter-looking tone.
Application Guide
How to use
Evening routine
Repeat the morning step. May be layered with the Whitepurity Cream for sensitive areas.
Realistic Expectations
What to expect
I
Week 1–2
Fresher, brighter surface
Skin looks brighter, smoother and more refreshed as the surface renews and light reflects more evenly.
II
Week 3–4
Dark spots fade
Discoloration and post-blemish marks visibly lighten as the multi-active brighteners work together.
III
Week 4–8
Even, luminous tone
A clearer, more uniform, radiant complexion — brightness you can genuinely see.
Individual results vary based on skin condition and routine consistency.
Complete the routine
Pairs beautifully with
Sunprotex SPF50+
Brightening only holds when UV can't undo it. Sunprotex SPF50+ shields your progress daily and stops new dark spots from forming.
ExploreHydraderm Face Gel
Well-hydrated skin reflects light more evenly. Hydraderm Face Gel adds weightless moisture under your brightening routine for a more luminous finish.
Explore
Frequently asked questions
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.
Last reviewed by BIOSAR Scientific Team, PharmD, Cosmetic Chemistry, Pharmacy practice on .
Claims & methodology
- Reduces the appearance of dark spots and corrects uneven tone — Consumer perception study. Study on file at BIOSAR Laboratories.
Published references
- J Cosmet Dermatol 2015 (Morag et al.). pubmed.ncbi.nlm.nih.gov/26119285/
- Dermatol Res Pract 2011 (Navarrete-Solís). pmc.ncbi.nlm.nih.gov/articles/PMC3142702/
- Exp Dermatol 2003 (Humbert). pubmed.ncbi.nlm.nih.gov/12823436/