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Bk – Rejuvenation Eye Serum

Kakadu Plum

Bk Rejuvenation Serum contains high levels of natural, stabilised vitamin C and antioxidants, which helps reduce dark circles, diminishes fine lines and firms delicate skin. Being a potent, water soluble serum, Bk has the ability to penetrate deeply into the dermis.

CLECS II Our unique extraction method, giving you 100% active, natural and stable vitamin C like no one else, extracted purely from Australian native Kakadu Plum.

Primarily designed as an eye serum, Bk serum can also be used as a full-face Vitamin C serum for anyone concerned with anti-ageing, pigmentation or redness.

As well as being incredibly high in naturally occurring Vitamin C, Kakadu Plum contains two compounds that have unique skin efficacies.

  • Gallic Acid is highly protective, helping to target sun spots and dark circles and assists in calming the skin
  • Ellagic Acid is brightening and helps defend against UV exposure, reducing photo-ageing.



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Why choose Bk - Rejuvenation Eye Serum ?

How to use

Customer Reviews

Based on 43 reviews

Fantastic customer service

Not like other vitamin c serums

This is the best Vitamin C serum I have ever used. My previous experiences with Vitamin C serums from other skincare brands often resulted in my skin becoming inflamed, as well as stains on my fingers which were a shade of yellow/orange. I came to the conclusion that my skin was unfortunately just not compatible with Vitamin C serums. Later, after having started Biologi and having had used quite a few of their products with which I had nothing but positive experiences, I decided to give the Bk serum a chance. My skin is prone to redness which I need to keep under control and I also wanted to prevent signs of ageing. I was initially quite sceptical because of my previous horrible experiences with Vitamin C serums, however, to my delight, the Bk serum did not irritate my skin at all. It was a stark contrast to my prior experiences - no staining and no inflamed skin. It gives my skin a nice glow and I usually incorporate it into my morning routine, followed by sunscreen. It also applies very smoothly; no stickiness and no fragrance. Many thanks to Biologi for restoring my faith in Vitamin C serums.

4th bottle and counting

Many reasons I love Biologi products so much. Their components are natural, the active ingredients are native, the effects on the skin and long term and durable, they simplify instead of complicate skin care, and now, even better, the bottles can be returned!! I'm a loyal costumer! Love

Bk eye serum

I love Biologi serum and my skin has never felt and looked better.
I’m 62 and have been using Bk and Bm along with Roship Oil for some time now and my skins looks great and feels so hydrated. Thank you Biologi


It’s only been about two weeks but I can already see some improvements with softening of fine lines around my eyes and mouth and skin feels more hydrated. Looking forwards to seeing what 28 days brings! I am 53 so seeing any improvement at all has been a bonus after trying other products with big promises that have never delivered for me,.

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