Serums & Face Oils
Serum is step three, after toner and before cream. A few drops target your main need.
Pick Your Scent
Organic formulation
15% Vitamin C + Rose Hydrogel Illuminating Double Serum
Radiance · Treat · AM & PM
Reboost Glow
$60.00
Pick Your Scent
Pick Your Scent
Which one is for me?
| Product | Pick this if… | Skin type | Key ingredients | When | Size · Price |
|---|---|---|---|---|---|
| Hyaluronic Acid Booster Serum | Dehydration is your main concern and you want a light daily moisture layer | Combination · Oily | Hyaluronic Acid · Estonian Birch Sap · Saaremaa Red Algae | Hydration · Treat · AM & PM | 1.0 fl oz$53 |
| 15% Vitamin C + Rose Hydrogel Illuminating Double Serum | Your skin looks dull or uneven and you want visible radiance | All skin types | 15% Pure Vitamin C · Lingonberry Extract · Cloudberry Extract | Radiance · Treat · AM & PM | 1.0 fl oz$60 |
| Skin Plumping Oil Serum | Skin looks less plump and you prefer a nourishing oil serum | Normal · Dry · Sensitive | Bio-Retinol · Organic Jojoba Oil · Organic Rosehip Oil | Firming · Treat · AM & PM | 1.0 fl oz$51 |
Swipe to compare
Hyaluronic Acid Booster SerumPick this if Dehydration is your main concern and you want a light daily moisture layer
- Skin type
- Combination · Oily
- Key ingredients
- Hyaluronic Acid · Estonian Birch Sap · Saaremaa Red Algae
- When
- Hydration · Treat · AM & PM
15% Vitamin C + Rose Hydrogel Illuminating Double SerumPick this if Your skin looks dull or uneven and you want visible radiance
- Skin type
- All skin types
- Key ingredients
- 15% Pure Vitamin C · Lingonberry Extract · Cloudberry Extract
- When
- Radiance · Treat · AM & PM
Skin Plumping Oil SerumPick this if Skin looks less plump and you prefer a nourishing oil serum
- Skin type
- Normal · Dry · Sensitive
- Key ingredients
- Bio-Retinol · Organic Jojoba Oil · Organic Rosehip Oil
- When
- Firming · Treat · AM & PM
Questions
Which serum is right for me?
The Hyaluronic Acid Booster is for dehydrated skin and suits combination and oily skin, with four molecular weights of hyaluronic acid. The 15% Vitamin C Double Serum is for dull, tired-looking skin and uneven tone. The Skin Plumping Oil Serum is for dry, mature skin, fine lines and loss of firmness.
What results can I expect from the Vitamin C serum?
In an independent instrumental study, it reduced the look of dark spots by 23% after 4 weeks. Over the same period, skin looked 10% firmer and fine lines looked softer.
Do I need a moisturizer after my serum?
Always follow the Hyaluronic Acid Booster with a cream or oil to seal in hydration; it doesn't replace a moisturizer. Follow the Vitamin C serum with moisturizer, plus sunscreen in the morning. The Plumping Oil Serum can be used on its own or before your moisturizer.
What is bio-retinol?
It comes from the plant Bidens pilosa, a gentle, plant-based alternative to retinol. It's in the Skin Plumping Oil Serum and across the Re-Boost Collagen line.
Do I need to patch test?
Yes, for the Vitamin C serum. Its vitamin C concentration is high, so try it on a small area before first use. Shake it well each time to mix its two phases.
Are JOIK serums organic and vegan?
Yes, all three are vegan and made in Estonia on renewable energy. The Hyaluronic Acid Booster is COSMOS ORGANIC certified by Ecocert Greenlife; the Vitamin C serum and the Plumping Oil Serum are COSMOS NATURAL certified by Ecocert Greenlife.










