Skip to main content
Whitening Serum
I · Formulation

Whitening 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
Get in touch

If you are unsure it suits you, your dermatologist or pharmacist is the one to ask.

Dermatologically tested
Every BIOSAR product
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 this formula works

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

  • 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.

    Dermatol Surg 2005 (Bissett, Oblong, Berge) — View research
  • 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.

    Exp Dermatol 2003 (Humbert) — View research
  • 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.

    J Clin Aesthet Dermatol 2014 — View research

Published studies on ingredients, some tested inside other formulas. They are not tests of this product, and results vary from person to person.

Transparency

What's inside — and what's not

  • 01

    Alpha-Arbutin

    Stable tyrosinase inhibitor. Interrupts the enzymatic step that produces excess melanin. Evens tone gradually without photosensitization.

    View research
  • 02

    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.

    View research
  • 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.

    View research
  • 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.

    View research
  • 05

    Tranexamic Acid

    Amino acid derivative that targets stubborn pigmentation pathways. Works alongside Alpha-Arbutin or Niacinamide for multi-pathway tone correction.

    View research
  • 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.

    View research
  • 07

    Vitamin E

    Tocopherol

    It neutralizes free radicals at the lipid layer, helping limit oxidative damage to formula and skin surface.

    View research
  • 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.

    View research
  • 09

    Lactic Acid

    It loosens bonds between surface cells to ease gentle exfoliation while drawing in moisture for a smoother look.

    View research
  • 10

    Glycolic Acid

    It weakens cohesion between surface cells, encouraging gentle exfoliation and visible surface renewal.

    View research
  • 11

    Licorice

    Glycyrrhiza Glabra (Licorice) Root Extract

    Its glabridin helps moderate the look of excess pigment, supporting a more even, brighter-looking tone.

    View research

Application Guide

How to use

Morning routine

Apply three drops to clean skin. Allow to absorb before moisturizer and sunscreen.

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 Care

Build your Whitepurity routine

Complete the routine

Pairs beautifully with

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.

  • 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.

Last reviewed by BIOSAR Scientific Team, PharmD, Cosmetic Chemistry, Pharmacy practice on .

Claims & methodology

  1. Reduces the appearance of dark spots and corrects uneven tone — Consumer perception study. Study on file at BIOSAR Laboratories.

Published references

  1. Dermatol Surg 2005 (Bissett, Oblong, Berge). pubmed.ncbi.nlm.nih.gov/16029679/
  2. Exp Dermatol 2003 (Humbert). pubmed.ncbi.nlm.nih.gov/12823436/
  3. J Clin Aesthet Dermatol 2014. pmc.ncbi.nlm.nih.gov/articles/PMC3970829/