Signal Serum contains 200,000 ppm—equivalent to 20%—salmon-derived PDRN in the finished formula. We disclose that number because it is useful context, not because a concentration alone determines the experience. It is paired with 2% niacinamide, targeted peptides and a multi-hydration complex in one lightweight daily treatment step.
200,000 ppm PDRN + 2% niacinamide
Signal Serum
$39.99
30 ml / 1.01 fl. oz. · Use 2–3 pumps morning and evening
A lightweight Korean gel serum for skin that feels dry, looks dull or appears less even than usual. One focused treatment step designed to help skin feel hydrated, look fresher and support a more even-looking complexion over time.
- Helps skin feel hydrated, soft and more comfortable.
- Helps dull-looking skin look fresher and more radiant.
- Supports a brighter, more even-looking complexion.
Is Signal Serum for me?
- Skin that feels dry, tight or less comfortable than usual
- A complexion that looks dull or tired
- Skin tone that appears less even than usual
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Why 20% PDRN?
A disclosed concentration, within a complete formula.
A simple daily routine
Where Signal Serum fits.
- 01Cleanse
Use your preferred gentle cleanser.
- 02Apply Signal Serum
Apply a small amount to the face and neck.
- 03Moisturize
Finish with moisturizer and use sunscreen during the day.
What it does
Signal Serum is designed as one focused treatment step for skin that feels dry or tight, looks dull or appears uneven. Its lightweight formula combines hydration support with niacinamide, PDRN and peptides to help skin feel more comfortable, look fresher and support a more even-looking complexion with consistent cosmetic use.
Key ingredients
200,000 ppm salmon-derived PDRN
Equivalent to 20% of the finished formula. Listed in the ingredient declaration as Sodium DNA.
2% niacinamide
Supports a brighter, more even-looking complexion.
Multi-hydration complex
Sodium hyaluronate, glycerin, butylene glycol, methylpropanediol, trehalose and betaine help support hydration and comfort.
Targeted peptides
Palmitoyl Pentapeptide-4, Acetyl Hexapeptide-8 and GHK-Cu (Copper Tripeptide-1) complement the formula.
Comfort-supporting ingredients
Panthenol, beta-glucan and Centella asiatica extract help round out the formula for a comfortable skin feel.
Full ingredient list
How to use
After cleansing, apply 2–3 pumps to the face and neck. Follow with moisturizer. Use morning and evening, then apply broad-spectrum sunscreen during the day. Patch test before first use and introduce one new product at a time.
Who it is for
For people looking for one lightweight daily serum when skin feels dry or tight, looks dull or appears less even than usual. It is not an acne treatment or a substitute for professional advice about persistent, painful or changing skin concerns. Those with sensitive skin should patch test and introduce the product gradually.
Learn before you layer
Understand the formula.
Questions, answered
What does 200,000 ppm PDRN mean?
Signal Serum contains 200,000 ppm—equivalent to 20%—salmon-derived Sodium DNA (PDRN) in the finished formula.
How much should I use?
Apply 2–3 pumps after cleansing to the face and neck, then follow with moisturizer. Use morning and evening and apply broad-spectrum sunscreen during the day.
Can Signal Serum be used with other serums?
It can fit into an existing routine, but avoid introducing several unfamiliar products at once. Keep only the steps that have a clear role for your skin.
Is Signal Serum suitable for sensitive skin?
Individual sensitivity varies. Patch test first, introduce gradually and stop use if persistent discomfort occurs.
Where can I find the complete ingredient list?
Download the complete ingredient list for Signal Serum.
View full ingredient list (PDF opens in a new tab)Ready to add one intentional daily step?
Signal Serum · $39.99