KEEP CALM Soothing Serum

$50.00 USD

Calm irritated skin & reduce redness for resilient and peaceful skin








Coax skin into optimum tranquility with this nourishing soothing serum to effectively heal and hydrate sensitive skin, calming dry and inflamed skin for a refreshed complexion. This delicate serum is enriched with potent regenerative ingredients to boost skin's resilience and strengthen the skin's barrier for an unrivaled soothing sensation. Glide on the delicate powers of Melon Extract and Dipotassium Glycyrrhizate to comfort irritated and sensitive skin, exceptionally revered for cooling and relieving rosacea and eczema prone-skin.


  • Heal and calms inflamed, sensitive skin
  • Hydrates skin to reduce skin redness
  • Soothe eczema and rosacea-prone skin

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Key Ingredients

95% Ingredients of Natural Origin

Powered by our encapsulated BIYUSEN™ technology, formulated with high potency of botanicals and science actives.

IREN Shizen

95% Ingredients of Natural Origin

Powered by our encapsulated BIYUSEN™ technology, formulated with high potency of botanicals and science actives.

IREN Shizen
Dive Into The Evidence

Visible Results

said skin felt more moisturized after 2 weeks.

saw reduced skin inflammation after 4 weeks.

saw reduced the look of their rosacea after 8 weeks.

*Sensory testing based on 67 women, aged 25 - 35.
Nature's Healing Water of Japan


The story of BIYUSEN™ started in a faraway plant-based hot spring in Hokkaido, where a chance observation of the locals' flawless skin led to the creation of IREN Shizen's iconic ingredient. Infused with a organic blend of cell-renewing acids, this luxurious bio-ingredient gently exfoliate to reveal translucent complexion that transcends age. With more than 70% of BIYUSEN™, every drop of the serum leaves skin feeling fresh, touchably soft and hydrated.

Nature refined by science

Time Release Encapsulation

Our powerhouse serums host our very own patented Encapsulated Biyusen™ technology to timely unlock each ingredient’s actives, discharging them 10 times faster and deeper into skin cells. Expect remarkable results of accelerated absorption, prolonged freshness and optimal efficacy after every application.


Made to Personalize

All skin is unique. Rather than defining skin through general skin type, effective skin treatment requires a perfect-fitting solution that treat specific skin conditions. Our 7 customised serums are purposely crafted with the purest and highest grade of active ingredients tailored to unique skin concerns, scientifically proven to always deliver visible results. Take the skin quiz expertly designed by our scientists and dermatologists for you to curate the precise serum combination for a more plumped and youthful complexion.

How to Use

Use in the morning and night after cleansing or/and toning face. Dispense 3-4 drops onto palm and gently pat in serum across the face and neck. Use alone or mix up to 3 serums according to your needs.


Which serums are best for me?

Take our Skin Ritual Quiz and have your skin needs accessed by our resident dermatologist. Based on your results, have the best suited products reccommended to you.

How do I mix the serums for a personalized treatment?

Inspired by the Japanese Art of Layering and thanks to our Encapsulated BIYUSEN™ Technology, all our serums can be mixed without any contradiction. You can either (1) use the serum alone, (2) layer the serums on different zones of the face, or (3) mix up to three serums in one single step for a customized and targeted treatment.

Why is it recommended to mix up to three serums only?

All our products go through a rigid and complex testing process by our internal R&D team to guarantee visible results and maximum efficacy. To ensure that the active ingredients have the optimal amount for the best efficacy, we recommend mixing up to three serums. Mixing more than three serums in one time would result in having insufficient active ingredients from each serum to have a satisfactory effect.

How long does it take to see results?

Results are very personal and depend on many factors, including your own skin genetics. Skin reacts differently and the time taken to see final results would vary for every individual.

In general, thanks to our Encapsulated BIYUSEN™ Technology, which aids in faster visible results, you would find that skin is smoother, calmer and more glowy upon usage. We invite you to wait several weeks (at least two cycles of cell renewal) to see the final effects of the product because a cell renewal lasts up to 4 weeks. The active ingredients contained in the products can be visibly effective on the skin usually after 6 weeks.