Squalane + Vitamin C Dark Spot Serum

A targeted 10% vitamin c treatment to brighten and fade dark spots

533 reviews
  • Squalane + Vitamin C Dark Spot Serum
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  • Squalane + Vitamin C Dark Spot Serum
  • Squalane + Vitamin C Dark Spot Serum
  • Squalane + Vitamin C Dark Spot Serum
  • Squalane + Vitamin C Dark Spot Serum
  • Squalane + Vitamin C Dark Spot Serum
  • Squalane + Vitamin C Dark Spot Serum
  • Squalane + Vitamin C Dark Spot Serum
  • Squalane + Vitamin C Dark Spot Serum
  • Full sizeSize: 30mL/1.01oz

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  • EWG

  • Vegan

  • Cruelty Free

  • Nontoxic

  • Paraben free

  • PEG free

Clinical Report

% Confirm

  • 100%agree this product helps improve the look of dark spots*
  • 100%agree this product improves the look of sun damage*
  • 97%showed improvement in uneven skin tone*
This powerful and lightweight vitamin C for dark spots serum:
  • Delivers a boost of brightness with 10% vitamin C, while white shiitake mushroom fades dark spots
  • Shows visible brightening instantly, while it works over time to dissolve pigmentation and prevent new discoloration
  • Our unique blend of ingredients is precisely calibrated to not cause irritation like traditional vitamin C serums

This first-of-its-kind dark spot serum features a proprietary white shiitake mushroom extract blended with our unique derivative of vitamin C, and delivers quicker, more powerful, longer-lasting results. Not only does it start degrading dark spots immediately, it keeps working every day to prevent new ones from forming.

Learn more about our newest launch, Vitamin C Dark Spot Serum.  Deep dive into our revolutionary formula and read on our blog post why a higher concentration isn't always more effective.

Shop all clean face serums & masks.

For external use only. Use only as directed. Avoid eye area. We recommend a patch test prior to use if you are particularly sensitive. If irritation occurs, consult a dermatologist.

  • EWG

  • Vegan

  • Cruelty Free

  • Nontoxic

  • Paraben free

  • PEG free


    Massage 2-3 pumps of the vitamin C for dark spots serum onto a cleansed face and neck, morning and night. Use before other treatment products, and follow with any Biossance moisturizer.

Layering Guide:

  • Step 1: Cleanser
  • Squalane + Elderberry Jelly Cleanser
  • Squalane + Antioxidant Cleansing Oil
  • Squalane + Amino Aloe Gentle Cleanser
  • Step 2: Toner
  • Squalane + BHA Pore Minimizing Toner
  • Step 3: Mask
  • Squalane + Glycolic Renewal Facial
  • Step 4: Eye Treatment
  • Squalane + Peptide Eye Gel
  • Squalane + Marine Algae Eye Cream
  • Step 5: Treatment
  • Squalane + Phyto-Retinol Serum
  • Squalane + Lactic Acid Resurfacing Night Serum
  • Squalane + Vitamin C Dark Spot Serum
  • Step 6: Moisturizer
  • Squalane + Omega Repair Cream
  • Squalane + Probiotic Gel Moisturizer
  • Step 7: Oil
  • 100% Squalane Oil
  • Squalane + Vitamin C Rose Oil
  • Squalane + Tea Tree Balancing Oil
  • Step 8: Sunscreen
  • Squalane + Zinc Sheer Mineral Sunscreen
  • Step 9: Makeup
  • Apply foundation, BB/CC creams and any color cosmetics
  • Anytime: After Step 1, Over Makeup, or Throughout the Day
  • Squalane + Omega Repair Hand Cream
  • Squalane + Hyaluronic Toning Mist
  • Squalane + Rose Vegan Lip Balm
10% vitamin C
  • SQUALANE: Derived from sugarcane, it mimics body's natural hydrating oils to provide weightless moisture to deliver active ingredients deep into the skin and prevent overdrying.
  • White Shiitake Mushroom: Synergistic mushroom blend that starts degrading dark spots immediately and continues correcting discoloration with continued use.

All Ingredients:

Water/Aqua/Eau, Glycerin, 3-O-Ethyl Ascorbic Acid, Squalane, Lentinus Edodes Mycelium Extract, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Glycyrrhiza Glabra (Licorice) Root Extract, Sodium Hyaluronate, Citric Acid, Polyacrylate Crosspolymer-6, Acacia Senegal Gum, Xanthan Gum, Sodium Gluconate, Sodium Citrate, Phenoxyethanol, Ethylhexylglycerin.

  • 1Will this get rid of my Melasma/hyperpigmentation/acne scarring?

    With continued use of this serum and sunscreen protection you can see an overall more even skin tone and help fade visible discoloration in the skin.
  • 2Why 10% of L-ascorbic acid/ Vitamin C?

    This is a daily use treatment, a lifestyle serum if you will. 10% has been shown to be an effective and safe amount for daily use. A higher percentage does not equal better or faster results. It is actually possible to have a higher chance of sensitivity when using higher %’s. Even if the % is higher it does not mean that the ingredient is acting on the skin in a stronger manner. I would value stability over higher % for better results and less chance of degradation/irritation. The stability of Vitamin C within a formula is much more important than the percentage.
  • 3Should this be used for spot treat or all over application?

    Results are better if applied all over - our formula only targets excess melanin.
  • 4Is it fragrance free?

    No synthetic fragrance or essential oils are added, so it is completely fragrance free. The ingredients themselves may emit a mild scent that should dissipate after application


Customer Reviews
4.6 Based on 533 Reviews
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United States United States
Major Allergic Reaction - Had to return :(

So bummed, but I had a terrible allergic reaction. The only new ingredient for me/my skin was Squalane. I had a terrible all over face rash, itchy and bright red skin (looked sunburned) and my skin was raised/inflammed and literally hot to the touch. Then came a breakout and heavy peeling. Fortunately, I used the old sunburn trick of a cold greek yogurt mask and then hydrocortisone and CBD oil to calm and heal my skin over 5-6 days. Sadly I had to return all the products.


Hi there, Thank you for your honest review! We’re sorry for your experience. All of our products are formulated to the highest standards of safety and are thoroughly tested. We do understand that everyone's skin is different and can experience different results. We are glad to hear you are doing okay now. Thank you & have a wonderful day, The Biossance Team

United States United States
amazing serum

This serum not only make my dark spats look lighter but also calm my sensitive skin. This is my four battle .

  • What is your skin type? Sensitive
  • What skin issue concerns you most? Uneven Tone & Dark Spots
  • How old are you? 55
Lee R.
United States United States

Use it twice a day. No results. Sorry.

  • What is your skin type? Normal
  • What skin issue concerns you most? Lifting & Firming
  • How old are you? 55
Janice D.
United States United States

I saw my spots start clearing up over 3 weeks. It's a bit pricey but a great product nonetheless.

  • What is your skin type? Normal
  • What skin issue concerns you most? Uneven Tone & Dark Spots
  • How old are you? 35-44
United States United States
Too Soon For Feedback Solicitation

I wish Biossance will just slow your roll when soliciting feedback. I just received the product 1.5 weeks ago. You really can’t expect changes to your skin already. Please be less like every other skincare company, as you claim, and be more inline with your values of following the cadence of nature with your natural ingredients. Changes take time, so please don’t solicit for feedback right away. It’s not helpful.

  • What is your skin type? Dry
  • What skin issue concerns you most? Uneven Tone & Dark Spots
  • How old are you? 45-54


Our commitment to people and planet applies to everything we create. We innovate every aspect of our company and supply chain to do better for our world and be the leading pioneers in sustainable beauty.


    Our squalane is derived from renewable sugarcane.

    Formulated using the latest sustainable methods. No deforestation and developed in far proximity from rainforests. Low water usage.

    Sugarcane and Forest Stewardship Council-certified boxes (FSC).

    Vegan, cruelty-free and nontoxic for people and the environment.

    All of our inner and outer cartons. (This excludes our airless bottle components and pumps.) We are working towards more sustainable solutions.
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