Pick by your main goal. For skin that looks stressed, red or tired, start with the EGF Blue Youth Activating Drop. For dull-looking skin and a first vitamin C, the Freshly Juiced Vitamin Drop. For visible pores and a less bouncy feel, the Vitamin PDRN Bouncy Pore Serum. For dry, dull skin that wants a nourishing, syrupy layer, the Maple Energy Infusing Serum. Two serums can share a routine, one in the morning and one at night.
The four serums at a glance
| Serum | Texture and size | Key ingredients | Fragrance note |
|---|---|---|---|
| EGF Blue Youth Activating Drop | Watery, 50 mL | sh-oligopeptide-1 (EGF), sh-polypeptide-1 (bFGF), guaiazulene, blueberry extract, adenosine | No added fragrance; contains guaiazulene |
| Freshly Juiced Vitamin Drop | Light, 35 mL | 5% pure vitamin C (ascorbic acid), centella and plant extracts | Contains orange and lavender oils |
| Vitamin PDRN Bouncy Pore Serum | Gel-serum, 35 mL | Sodium DNA (PDRN), niacinamide, five forms of vitamin C, peptides including copper tripeptide-1, adenosine | No fragrance or essential oils listed |
| Maple Energy Infusing Serum | Syrupy, 30 mL | Sugar maple sap, squalane, plant butters, adenosine, three peptides | No added fragrance listed |
On-site reviews as of October 17, 2026: EGF Blue Youth Activating Drop 4.7 stars (540 reviews), Freshly Juiced Vitamin Drop 4.8 stars (848), Maple Energy Infusing Serum 4.8 stars (30).
Pick by concern
| Your main concern | Start with | Why |
|---|---|---|
| Redness-prone, easily stressed skin | EGF Blue Youth Activating Drop | Simple, watery formula built around EGF peptides and guaiazulene |
| Dull look, uneven-looking tone | Freshly Juiced Vitamin Drop | A gentle 5% vitamin C, a common starting strength |
| Visible pores, skin feels less bouncy | Vitamin PDRN Bouncy Pore Serum | PDRN, niacinamide and peptides in one step |
| Dry, dull skin; first well-aging step | Maple Energy Infusing Serum | Nourishing texture with squalane, adenosine and peptides |
Can you use two?
Yes. The easiest split is vitamin C in the morning and a calming or nourishing serum at night.
- Morning: Freshly Juiced Vitamin Drop → moisturizer → sunscreen.
- Night: EGF Blue Youth Activating Drop or Maple Energy Infusing Serum → moisturizer.
- Pores plus calm: Vitamin PDRN Bouncy Pore Serum in the morning, EGF Blue Drop at night.
If your skin is reactive, introduce one new serum at a time, two weeks apart. More pairings across our lines: which Klairs products you can use together.
How to apply each texture
- EGF Blue Drop (watery): a few drops into your palms, then press over the face. It can go on slightly damp skin.
- Vitamin Drop (light): 3–4 drops on dry or barely damp skin; give it a minute before the next step.
- PDRN Serum (gel): one pump, spread evenly, then pat until it stops feeling tacky.
- Maple Serum (syrupy): warm one pump between your palms, then press in.
Serum goes after toner and before moisturizer. If you use two serums in one routine, apply the thinner one first and wait a minute or two between them. A 35 mL bottle used once a day lasts about four months; a 50 mL bottle used twice a day lasts about three.
What to expect, and when
Hydration and comfort are things you feel right away. A brighter or smoother look builds more slowly, so give any serum about four to eight weeks of steady use before you judge it, and change only one thing at a time so you can tell what's helping (see how long until skincare works).
Winter notes
- Dry skin may find vitamin C tingles more in winter. Apply it to dry skin and use it every other morning for a while.
- The Maple serum is the most comforting of the four on dry, cold days.
- Any serum still needs a moisturizer on top in heated rooms.
Who it's for — and who should skip it
| Good fit if… | Skip or adjust if… |
|---|---|
| EGF Blue Drop: sensitive, red-looking or tired skin; you want a light, simple step. | EGF Blue Drop: you're sensitive to chamomile-derived ingredients — patch test. |
| Vitamin Drop: you're new to vitamin C and want a gentle start. | Vitamin Drop: you avoid essential oils, or vitamin C stings your skin. |
| PDRN Serum: visible pores and texture are your main concern. | PDRN Serum: you want the most minimal ingredient list possible. |
| Maple Serum: dry, dull skin; you like a rich, glowy finish. | Maple Serum: your skin is very oily — it can feel rich. |
Full fit guides: EGF Blue Drop · Vitamin Drop · PDRN Serum · Maple Serum. General guide: how to choose a serum by concern.
FAQ
Which Klairs serum is best for sensitive skin?
The EGF Blue Youth Activating Drop is the simplest of the four and the usual first pick for sensitive, red-looking skin. Patch test, since it contains guaiazulene.
Can I use the Freshly Juiced Vitamin Drop and the EGF Blue Youth Activating Drop together?
Yes. Use the Vitamin Drop in the morning and the EGF Blue Drop at night, or both in the morning with the vitamin C first and a few minutes in between.
Which Klairs serum is for pores?
The Vitamin PDRN Bouncy Pore Serum, which combines PDRN, niacinamide, peptides and several forms of vitamin C.
Which Klairs serum is best for dry skin in winter?
The Maple Energy Infusing Serum, a syrupy, nourishing serum with squalane and plant butters.
Do any Klairs serums contain essential oils?
The Freshly Juiced Vitamin Drop contains orange and lavender oils. The other three list no essential oils.
Note: product figures come from cosmetic studies or brand-reported data as published by Dear, Klairs. They describe how skin looks and feels; individual results vary; not intended to diagnose, treat, cure or prevent any condition. Always patch test.
