Kasvi Beauty Twilight Birch serum skincare bottle on a light gray background

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Twilight Birch Nordic Face Serum for Overnight Renewal

Evening Ritual · Step 1

Twilight Birch Nordic Face Serum for Overnight Renewal

Name: Twilight Birch Nordic Face Serum for Overnight Renewal
Brand: Kasvi Beauty
SKU: KB-0003
Price: 84.00 USD
Availability: InStock

Restore. Hydrate. Rejuvenate.

$84.00

30 ml · 1 fl oz

(2)

Skin that wakes up more than it went to sleep. A nighttime serum built on organic Finnish birch sap and the highest wild chaga concentration in the range, with lingonberry two ways for overnight nourishment and antioxidant care, and bakuchiol — the plant-based alternative to retinol — for smoother, firmer-looking skin.

Lingonberry, two ways
Highest chaga in the range
Bakuchiol, not retinol

The Renewal Duo $156.00 ~~$173.00~~Save $17 vs. buying separately

Each evening, after cleansing. Pump 1–2 times into your fingertips and press gently into face, neck, and décolletage. Never rub; rubbing stretches the skin. Let it absorb fully, then follow with Bilberry Dream Cream and finish with Nordic Renewal Elixir.

Or simply: Twilight Birch, then Nordic Renewal Elixir.

Twilight Birch
Bilberry Dream Cream
Nordic Renewal Elixir

Betula Alba (Birch Sap) Juice, Glycerin, Water (Aqua), Propanediol (plant-derived humectant), Alcohol, Vaccinium Vitis-Idaea (Lingonberry) Seed Oil, Picea Abies (Norway Spruce galactoglucomannan) Wood Extract, Bakuchiol (plant-derived retinol alternative), Caryodendron Orinocense (Cacay) Seed Oil, Pentylene Glycol, Ribes Nigrum (Black Currant) Seed Oil, Tocopherols (Vitamin E), C13-15 Alkane (plant-derived emollient), Inonotus Obliquus (Chaga Mushroom) Extract, Vaccinium Vitis-Idaea (Lingonberry) Fruit Extract, Urtica Dioica (Nettle) Leaf Extract, Plantago Major (Plantain) Leaf Extract, Achillea Millefolium (Yarrow) Extract, Psoralea Corylifolia (Bakuchi) Fruit Extract, Hippophae Rhamnoides (Sea Buckthorn) Fruit Oil, Urtica Dioica (Nettle) Root Extract, Sclerotium Gum, Sodium Phytate, Salicylic Acid, Caesalpinia Spinosa (Tara) Gum, Fibroin Glycoside (silk-derived humectant), Sorbic Acid, Helichrysum Stoechas (Everlasting) Flower Extract, Citric Acid, Xanthan Gum, Gluconolactone, Calcium Gluconate, Benzyl Alcohol, Sodium Benzoate, Fragrance (Parfum): Ribes Nigrum (Black Currant) Flower Absolute, Juniperus Communis (Juniper Berry) Fruit Oil, Pelargonium Graveolens (Rose Geranium) Oil, Abies Balsamea (Balsam Fir) Needle Oil, Black Currant Fragrance†, Green Fragrance†

† We're committed to fragrance transparency. The Twilight Birch scent is over 99% natural — a blend of pure essential oils and a botanical absolute. The remaining trace (less than 0.01%) consists of nature-identical fragrance molecules that mirror compounds found in nature, used to round out the scent profile.
*Contains botanical extracts and essential oils. As with all active botanical formulas, individual sensitivity varies. Patch test recommended for reactive skin. Discontinue use if irritation occurs. Not for use on broken or compromised skin. Consult a healthcare professional if you are pregnant, nursing, or have a known skin condition.

We source with the same care the Nordic relationship with nature has always demanded — taking only what is needed. We prioritize suppliers whose practices we can stand behind across the full supply chain, environmentally and socioeconomically. Nothing is borrowed. Nothing is performed.

The story

In Finnish autumn, the light drops fast. One hour the forest is copper and amber; the next it has turned inward — dark, concentrated, still. This is the hour when everything accumulated through the long summer is present. The lingonberry holds its color through the first frost. The birch stands patient. This serum was made for exactly this — the hours when skin does its most considered work.

Kasvi Beauty · Nordic plant wisdom

Curated with Nordic plant wisdom, this overnight serum is your first step after evening cleansing, made for skin navigating changes in firmness and hormonal shifts. It leads with Nordic lingonberry in two forms — cold-pressed seed oil and an antioxidant-rich fruit extract — to nourish and cushion the skin barrier through the overnight hours. Alongside works bakuchiol, a modern plant-derived active studied as a gentler retinol alternative, to smooth the look of fine lines without the irritation retinoids can bring. Built on a base of over 70% organic Finnish birch sap and wild chaga, it leaves skin plump and prepped for your night cream or oil.

From Forest to Formula

Twilight Birch begins with over 70% birch — Finnish birch sap as the base, and wild Chaga mushroom extract at its highest concentration in the Kasvi Beauty range. At night, when skin's renewal activity rises and the contact window is longer, a base that carries actives deeper becomes not a preference but a purpose.

The Nordic Botanical Complex — yarrow, nettle root and leaf, plantain — is read differently at night. Nettle root and nettle leaf are not the same ingredient: the leaf brings mineral density, silica, and anti-inflammatory compounds; the root carries distinct phytochemical fractions with their own traditional applications. Both are here because both are needed. The complex settles the skin before the active layer begins its work.

Then, Nordic lingonberry — one berry, two forms. From the seed, a cold-pressed oil rich in omega-3 and omega-6 essential fatty acids, with the vitamin E–family compound gamma-tocotrienol — the lipids a barrier is built from, and the ones skin leans on overnight. From the fruit, an antioxidant-rich extract carrying lingonberry's polyphenols. The oil nourishes and cushions the barrier; the extract brings the berry's antioxidant character. Both from one berry, chosen to work together.

Bakuchiol is the modern active. Plant-derived, present as both botanical extract and isolated compound. It's the most-studied natural alternative to retinol — shown in published research to smooth the appearance of fine lines and support a more even tone, with far less of the irritation retinoids are known for. For skin navigating hormonal change, that gentleness isn't a compromise. It's the point.

The same galactoglucomannan emulsifier from upcycled Finnish spruce sawdust creates the texture — ECOCERT COSMOS certified, film-forming, biologically active. The silk-derived humectant complex holds overnight hydration without stickiness.

How to Use

Each evening, after cleansing. 1–2 pumps pressed gently into face, neck, and décolletage. The warm color can transfer if over-applied — less is right. Let absorb fully, then follow with Bilberry Dream Cream.

Evening ritual: Twilight Birch → Bilberry Dream Cream → Nordic Renewal Elixir

Or simply: Twilight Birch → Nordic Renewal Elixir

Close-up of a spatula spreading Twilight Birch serum, yellowish brown serum gel on a white background

From forest to formula

Made for the hours when skin does its most considered work.

70%+: Organic Finnish birch sap, by weight
2: Forms of lingonberry, one berry
2: Forms of bakuchiol, extract and isolated active
3: Boreal plants to settle skin first

01 · The base

A base that carries

Over 70% organic Finnish birch sap, with wild chaga at its highest level in the range. At night, when the contact window is longer, a base that carries rather than dilutes becomes a purpose.

02 · The berry

Lingonberry, two ways

Cold-pressed seed oil for the lipids a barrier is built from, and a fruit extract for lingonberry's antioxidant character. One berry, chosen to work together.

03 · The modern active

The considered alternative

Bakuchiol, plant-derived and unrelated to vitamin A, studied to smooth the look of fine lines with far less of the irritation retinoids are known for.

Hero ingredients

What's inside, and why

Hero ingredients

Birch Sap + Wild Chaga Mushroom Extract · The Overnight Foundation

Betula alba juice · Inonotus obliquus · Highest Chaga concentration in the range

What it does:

Organic Finnish birch sap forms the entire water phase, carrying minerals, amino acids, and xylitol deeper into skin. Wild Chaga mushroom extract at the highest level in the range — betulinic acid, melanin complex, and polysaccharides with antioxidant activity among the most extensively studied in the fungal world. The warm brown of this serum is the extract. Not a colorant — evidence of concentration.

Why it's here:

At night, the contact window is longer and renewal activity rises. A base that carries — rather than dilutes — changes what the actives can do. What is here is here with purpose, at the highest level in this range.

Nordic Lingonberry · Two Forms, One Berry

Vaccinium vitis-idaea seed oil · cold-pressed, Nordic origin · Vaccinium vitis-idaea fruit extract

What it does:

One berry gives two things. The seed yields a cold-pressed oil rich in omega-3 and omega-6 essential fatty acids and the vitamin E compound gamma-tocotrienol — the barrier lipids skin draws on through the night. The fruit yields an antioxidant-rich extract carrying lingonberry's polyphenols. The oil nourishes and cushions; the extract brings the berry's antioxidant character. Together, they give the barrier something to work with through the overnight hours.

Why it's here:

Lingonberry keeps its leaves through a Nordic winter, green under the snow. That resilience is the story — and it's also the chemistry. The seed oil is omega-3-heavy, which makes it deeply nourishing and also fragile in light and air. So we gave it the night, in packaging that keeps light and oxygen out, where the oil stays true and skin is most receptive. This is the heart of Twilight Birch, and it belongs to the Nordic forest in a way that can't be borrowed.

Nordic Botanical Complex

Yarrow · Nettle root and leaf · Plantain · Proprietary blend

What it does:

Three boreal plants. Nettle root and leaf are distinct — the leaf brings mineral density, silica, and anti-inflammatory compounds; the root carries different phytochemical fractions with their own traditional applications. Yarrow for calming. Plantain for allantoin.

Why it's here:

Skin navigating hormonal change is more reactive. Before the actives can do their overnight work, the skin needs to be settled enough to receive them. This complex creates those conditions. Quietly.

Bakuchiol · The Considered Alternative

Psoralea corylifolia fruit extract + isolated active · Clinical concentration · Two forms

What it does:

Not a retinoid — chemically unrelated to vitamin A. A 2019 randomised double-blind study in the British Journal of Dermatology showed comparable results to retinol on wrinkle surface area and hyperpigmentation, with significantly less scaling and stinging. Present as both fruit extract and isolated active for depth of delivery.

Why it's here:

Retinol is frequently not tolerated by skin navigating hormonal change. Bakuchiol delivers the same functional outcome through a different pathway — without photosensitivity, without the irritation that interrupts consistency. Consistency is where results come from.

Silk-Derived Humectant Complex

Fibroin glycoside · Two forms · Upcycled, naturally derived

What it does:

A silk-derived humectant complex, in two complementary forms, clinically studied for up to 24-hour hydration comparable to mid and high molecular weight hyaluronic acid — without HA's humidity-dependence. Binds to skin keratin and stays through the day. No stickiness. No tackiness.

Why it's here:

The renewal work overnight requires a hydration environment that holds. This provides it — upcycled, naturally derived, staying on skin while everything else does its work.

Your evening ritual

Cleanse. Then three steps.

The Renewal Duo

Renew. Restore. The Complete Evening Ritual.

$156.00 ~~$173.00~~

Save $17 vs. buying separately

Questions

Good to know

Is bakuchiol the same as retinol?

No. Bakuchiol is plant-derived and chemically unrelated to vitamin A. It has been studied as a gentler alternative to retinol, with far less of the irritation retinoids are known for.

Why is the serum a warm brown?

That's the wild chaga extract, at its highest level in the Kasvi Beauty range. It's evidence of concentration, not a colorant.

Where does it go in my evening routine?

First, right after cleansing. Follow with Bilberry Dream Cream, then Nordic Renewal Elixir. For a simpler evening, go straight from Twilight Birch to the Elixir.

Is it right for sensitive skin?

It contains botanical extracts and essential oils. Patch test if your skin is reactive, and don't use on broken or compromised skin. If you're pregnant or nursing, check with your healthcare professional first.

Complete the ritual