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Bqk – Radiance Face Serum

Morning Serum Kakadu Plum + Evening Serum Quandong
2 x 15ml

Bqk serum is a powerful duo in Biologi’s revolutionary single-plant ingredient skincare range. Designed specifically to target stubborn pigmentation, Bqk Radiance is a fully active morning and evening ritual that improves skin colour and clarity while preventing against further pigmentation.

(14 customer reviews) View All
Joanna OngMay 18 2020
I’m loving this duo serum! I’m so happy that I found Biologi that save my skin! Into my third week of using it and friends around me have noticed a huge difference to my skin radiance. Will definitely recommend this :)

AUD$44.00 AUD$138.00 

or 4 fortnightly payments from AUD$11.00  with Afterpay





Why choose Bqk serum?

Bqk serum contains the highest levels of natural vitamin C and pigment inhibiting phyto actives that work together to reduce the appearance of pigmentation and redness in the skin as well as preventing further uneven skin tone

Ingredients: Kakadu Plum & Quandong, 0.2% Sodium Benzoate

Use Bqk serum for:
  • Pigmentation and redness
  • Even skin tone
  • Anti ageing
  • Anti-oxidant protection from damaging free radicals
  • Prevent further pigmentation forming

Kakadu plum 100% active nutrients*

Morning Serum

Plant-based natural vitamin C

The science

Vitamin C from a natural source helps to inhibit melanogenesis (the formation of unwanted pigmentation) increases skin elasticity and reduces redness and sunspots. The powerful active nutrient also helps skin combat damage from harmful UV rays.

Why do I need vitamin C?

  • Skin brightening
  • Anti-ageing
  • Reduce sun spots, acne scarring and redness
  • Anti-oxidant to protect from free radicals and environmental damage

Gallic acid

The science
Gallic acid is a phenolic acid that works as a potent anti-oxidant, reduces DNA damage, inhibits melanogenesis and improves inflammatory skin disorders.

Why do I need gallic acid?

  • Anti-ageing
  • Reduce sun spots and under eye dark circles
  • Anti-oxidant to protect from free radicals and environmental damage

Ellagic acid

The science
Another phenolic acid, ellagic acids helps in the treatment of chronic UV exposure, reduces the potential of photoaging, inhibits melanogenesis and reduces membrane liquid peroxidation and DNA damage.

Why do I need ellagic acid?

  • Sunburn
  • Anti-ageing
  • Reduces sun spots and dark under-eye circles
  • Brightens skin

Quandong 100% active nutrients*

Evening Serum


The science
Tryptophan is an alpha amino acid that helps protect the skin from damaging environmental factors such as UV damage that can cause dryness and sensitivity to delicate skin cells. Tryptophan builds protein hydrolysate to lock in moisture and hydrate and strengthen skin cells deep within the dermal layer.

Why do I need tryptophan?

  • Protects the skin from UV damage and environmental factors
  • Build moisture in the skin

Ferulic acid

The science
Ferulic acid is a hydroxycinnamic acid that hydrates and protects against free radical and environmental damage caused from exposure to UV rays and pollution.

Why do I need ferulic acid?

  • Prevention of skin alterations such as sun and age spots and redness
  • Prevents early ageing


The science

Rutin is a Flavone Glycoside containing powerful antioxidant and anti-inflammatory properties essential for a clear complexion and even tone.

Why do I need Rutin?

  • Anti ageing
  • Reduces skin redness and sun spots

Chlorogenic Acid

The science

Chlorogenic Acid is a Phenolic Acid that has significant anti-oxidant activity to protect against UV radiation that causes pigmentation.

Why do I need Chlorogenic Acid?

  • Reduces redness
  • Protection from damaging free radicals
  • Helps to prevent skin alterations such as pigment and sun spots

How to use Bqk Serum:

Morning routine

  • Cleanse thoroughly
  • Apply one to two pumps of morning serum all over the face and around the eye area paying attention to areas with pigmentation
  • Sunscreen

Evening routine

  • Double cleanse
  • Apply one to two pumps of evening serum all over the face and around the eye area paying attention to areas with pigmentation.

Further instructions

  • Always apply to dry skin
  • Week one: use the morning serum daily in the AM, no evening serum required
  • Week two: use the morning serum daily in the AM + the evening serum every second night
  • Week three and ongoing: use both the morning and evening serum daily

Frequently Asked Questions

YES! Bqk serum contains powerful phytonutrients that hydrate skin, create an even tone and combat the early signs of ageing. While effectively reducing the visible signs of pigmentation, Bqk serum also prevents further pigmentation forming making it an essential serum for all skin types.
No, you must always use serums as recommended. Combining the morning and evening serum in one application may reduce the efficacy of the active ingredients and compromise results. If you miss a morning or evening application, continue the ritual as directed.
Kakadu plum (morning serum) is sustainably sourced from Aboriginal communities in WA & the NT.. Quandong (evening serum) is sourced from Broken Hill NSW. We have direct contact with farm owners and guarantee that all extracts are traceable from the farm to your bottle.
Once you introduce Biologi serums into your skincare routine, we recommend you cease using moisturising products to avoid compromising results. The potent combination of 100% active ingredients can hydrate, nourish and protect skin cells replacing day cream, night cream, eye cream and face masks.

14 reviews for Bqk – Radiance Face Serum

  1. Joanna Ong

    I’m loving this duo serum! I’m so happy that I found Biologi that save my skin! Into my third week of using it and friends around me have noticed a huge difference to my skin radiance. Will definitely recommend this 🙂


    I have been using this duo for maybe 9 months now. I am in my early 50’s with sensitive, combination skin. My skin started out good for my age, but I had started to develop enlarged pores and a few fine lines. Not anymore! My pores are much less visible, fine lines gone. This stuff is gold!

  3. Heather Earl

    Obsessed – As a busy mum this is a simple regime with maximum results – I have battled with pigmentation every summer but my skin tone is more even, texture is smoothing and fine lines are diminishing. Can’t quite believe how amazing this duo actually is.

  4. Paige Rogers

    I have never been happier with how my skin looks and feels. I’ve noticed my skin tone is so much more even and my blemishes have been non-existent! I live on a farm and spend a lot of time getting dirty so it’s fantastic having a product that so simple to use but makes such a huge difference!

  5. Melinda

    I have been using the Bqk for eight weeks now and have noticed a huge improvement in the texture of my skin, it is much smoother, redness has decreased and pigmentation seems to have faded a bit. I am also blown away by how hydrating these serums are. I also use the Bf on my face sometimes and on my body, especially on the backs of my arms where I have keratosis polaris, after a couple of days using Bf my arms are smooth again.
    I love these products.

  6. Vicki

    I have been using these for a month now and my skin pigmentation appears to be more even and the redness has decreased.
    My friend told me last week that my skin’s texture had changed and my fine lines were less obvious. At 63, this is great news!
    I have also had a head cold for a week and it’s the first time my nose hasn’t been red and sore.

  7. Mel Heuvel

    This duo together is my favourite of all the serums. The combination works so well for my skin. Its never been so hydrated and even toned. I also like use the bk when im trying to fight a cold, one pump under the tounge always helps keep a cold away.

  8. Meg Valentine

    I have been a skincare junkie for 30 years. I too believed the more products I applied morning and night the better. I have very oily skin and by the afternoon I need to remove excess oil. I have used biolgi for one month after I received it as a gift pack for my birthday and I promise you my skin has never looked clearer, felt smoother, my pores are refined and far less oily. The simplicity actually takes some getting used to. I would like to try Bqk next, I cannot wait. Thank you Biologi 🙏🏼

  9. Camelia Marchesi

    Psoriasis GONE!!
    I have had psoriasis on my face for over a year, nothing has ever permanently rid of it for more than 2-3 days at a time without it flaring right back up again.
    I have always loved Biologi for myself & my daughter and thought I’d try the new Bqk Serums and I have now been using the Bqk Serums religiously for almost a fortnight and I have had NO FLARES! Not even one in 13 days and my natural oils have come back after a year of dryness from the the flares.
    I am beyond shocked, I literally cannot stop looking and touching my face! It has been over a year since I’ve gone more than a few days without having a terrible flare up, so to say that I am both surprised and amazed would be an understatement!!
    This serum has transformed my skin to a whole new level, more than I expected and has worked miraculously, am beyond grateful!
    Thank you Lucy, Ross & the Biologi Team for creating something that has impacted my sensitive skin in such a positive way and quite literally uplifted my confidence and changing the way I now look at myself xx

  10. Monique P

    I am so impressed with the Bqk!
    I have noticed a significant change in the evenness of my skin tone and overall luminosity of my skin.
    I love the fact that the Quandong helps to stop the formation of new pigment and lifts my existing stubborn pigment. I have been using the Bqk one day and the Bd and Bf the following and my skin is absolutely loving it!! Thanks Biologi

  11. Lucy

    The Bqk morning and evening serum ritual is amazing!!! I’ve only been using it constantly for 3 weeks but my skin is glowing! I have a few freckles from sun damage and my cheeks can be slightly pink but I feel like my skin tone is much more even now. Im definitely going to keep this serum as part of my daily skincare routine.

  12. Laura E

    I have been trialling the Bqk serums and have noticed a marked difference to my skin tone and feel! As a mum it’s great to find products that are time saving and actually work on the stubborn pigment that I acquired through pregnancy. Serum and sunscreen in the morning, just serum at night – amazing. I will be purchasing the full sized bottles when my small ones run out! Thanks Biologi!

  13. Vicky

    I have been lucky enough to trial the Bqk for the last two weeks. I have been using the morning and evening ritual on my decolletage which is quite often red and prone to pimples.
    So far the skin tone is looking less red and more even and the pimples seem to be calming down.
    I am looking forward to seeing the results as I continue the ritual!

  14. Janel (Biologi staff member)

    I’m loving the Bqk morning and evening serums.
    The texture is so silky smooth, and soft and gentle on my skin.
    I immediately noticed the change in skin tone, especially on my décolletage. I would highly recommend it.

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