Squalane + Vitamin C Dark Spot Serum

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

542 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
4.5 Based on 542 Reviews
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Alex S.
United States United States
Allergic reaction

I have ordered this product twice. In March I ordered it and really liked it. I reordered in August and immediately had an allergic reaction around my eyes and mouth. I had to see a dermatologist to treat the reaction and it took process of elimination and reentry to identify the culprit was this new bottle from august. My eyes looked 40 years older for weeks, they were red and swollen and then became these awful dry patches.

  • Skin Type Normal
  • Top Concern Uneven Tone & Dark Spots
  • Age 25-34
Biossance Squalane + Vitamin C Dark Spot Serum Review

Hi Alex, Thank you for your review! We are so sorry for your experience and hope you are doing okay. Our customer care team will be in touch right away.

United States United States
Good dark spot corrector

The serum is okay. It's hydrating but not noticing much improvement in my dark spots. It's also fragrance free which is great for sensitive skin.

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

I got this product back in March and omg the first night I used this serum I woke up with swollen eyes and face! My face was burning and it didn’t go down for a few days. Even after it went down everything that was swollen started to get white **** dots all over and then my face got really dry. I immediately went to the dermatologist and got creams to help out with this allergic reaction. About a month ago I decided “hmm let me give this product one last try before tossing it” so I used the tiniest amount and yet again…woke up with a swollen face. Luckily it wasn’t as bad as the first time around because I used the tiniest amount. I threw away this product and it was a waste of $60 I’m probably never getting back.

  • Skin Type Sensitive
  • Top Concern Blemishes
  • Age 25-34
Biossance Squalane + Vitamin C Dark Spot Serum ReviewBiossance Squalane + Vitamin C Dark Spot Serum ReviewBiossance Squalane + Vitamin C Dark Spot Serum ReviewBiossance Squalane + Vitamin C Dark Spot Serum ReviewBiossance Squalane + Vitamin C Dark Spot Serum Review

Hi Canan, Thank you so much for your honest review. We are so sorry for this experience and hope you are doing okay now. Our customer care team will be in touch very soon!

Michelle P.
United States United States
Broke Me Out

Let me start by saying I LOVE all the Biossance products I have ever used - and this is just a reaction I had to this particular serum. This was a new one I was trying out. For some reason, it's caused me to break out bad around my mouth and chin area. I came to reviews to see if anyone else had this issue, and seeing that a couple of other people have - which is why I'm sharing my experience. I'm not sure what the difference is between this product and the other Biossance products, but for me, this one didn't work!

  • What is your skin type? Normal
  • What skin issue concerns you most? Age Prevention
  • How old are you? 25-34
United States United States
So far so great!

I’ve been using the dark spot serum to lighten age spots and brighten skin tone. Working great so far! I do use the lactic acidosis serum a few nights a week, but no other serums.

  • What is your skin type? Sensitive
  • What skin issue concerns you most? Age Prevention
  • 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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