Squalane + Vitamin C Dark Spot Serum

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

555 reviews
  • Bottle Products Squalane + Vitamin C Dark Spot Serum
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  • Products Squalane + Vitamin C Dark Spot Serum
  • woman face with cream
  • 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
4.5 Based on 555 Reviews
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United States United States

Skin that looks brighter and feels softer

I started using the serum on my vacation to Palm Springs a few months ago. I use it once in conjunction with the Biossance cleanser first, then serum, and then the face cream once in the morning and at night before going to bed. My skin feels noticeable softer after a few days. On my Zoom calls, I can also see a difference. My skin is noticeably brighter.

A Biossance Customer
Alyssa B.
United States United States

My FAVORITE skincare product

I never leave reviews for products because everyone is different, our skin has different needs so my experience will be different from others’ but this product deserves another 5 star review. I like to compare my skin to terrain. It’s dry in some places, bumpy in others, uneven, a little swampy in some places lol. Generally one product might fix one of these issues but exacerbate the others. However this resolves all of my issues. I’ve never had calm, even, smooth, glowing skin in my entire life until now. And the best part is it quickly lightens the annoying red marks that I seem to easily get from breakouts. For reference, I am 38. Very fair, sensitive, and often dry skin. Please don’t stop making this. I need it so I can look my best for the next 40+ years!

  • Skin Type Sensitive
  • Top Concern Blemishes
  • Age 35-44
Marion B.
United States United States

Ĺòve love love

Ònly 2 weeks my dark spots are much lighter

Marlene D.
United States United States

Best dark spot serum

Great item. Has made a significant difference on the dark spots on my face. So happy to have found this product line!!

  • What is your skin type? Normal
  • What skin issue concerns you most? Age Prevention
  • How old are you? 45-54
United States United States

Dark spot serum

I have been using this serum for awhile. Definitely see fading of my dark spots. I use it on my face and hands. It absorbs quickly. It is silky going on. I will continue to use.

  • What is your skin type? Oily
  • What skin issue concerns you most? Age Prevention
  • How old are you? 55


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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