IO Expression-Line Serum Active Liquid

This ingredient at a glance

IO Expression-Line Serum Active Liquid is a liquid concentrate sold by the milliliter. Our product record describes its cosmetic focus: a relaxed look in areas of facial movement, smoother-looking wrinkles and a lifted appearance. It is water-soluble and is added directly to the water phase during cool-down. The INCI and active content are printed on the CoA for each lot.

The expression-line category

Expression lines form where the face moves most: the forehead, between the brows and at the outer corners of the eyes. Customers who want a smoother look in these areas often search for peptide serums as a cosmetic option. Liquid actives in this category give brands a simple, water-soluble ingredient for clear serums and light creams.

Applications

Expression-line serums, eye creams, forehead fluids, roll-ons and firming day creams are typical. This ingredient combines well with Acetyl Hexapeptide-8 Powder and IO Expression-Line Mask Active Liquid in a multi-active product. Explore more in our peptides catalog.

How to use it

Cool the base below 40 °C and add this ingredient with gentle stirring. Avoid reheating. Keep the pH in a mild range. Follow the CoA and supplier documentation for the use level.

Claims to avoid

The expression-line category attracts comparisons with injectable procedures. Avoid them entirely. Describe the look you aim for, such as smoother-looking forehead lines with regular use, and base any numbers on testing of your finished product. Simple, honest claims build trust and keep the product within cosmetic rules.

Application tips for customers

Instruct customers to apply a small amount to clean skin morning and evening, focusing on the forehead, between the brows and around the eyes, and to follow with moisturizer. Consistency over several weeks matters more than quantity.

Format choices

Roll-ons with a metal ball are popular for targeted use, while pump serums cover the whole face. A small set with both formats lets customers care for the eye area and the forehead separately.

Compatibility

Liquid actives of this type are generally compatible with glycerin, hyaluronic acid, panthenol, caffeine and other peptides. Avoid strong acids, strong bases, oxidizers and long heating.

Combining with hydration

Expression-line serums feel more convincing when they also hydrate. A humectant such as glycerin, sodium hyaluronate or a cross-linked hyaluronate gives the skin an immediately smoother, plumper look that customers notice from the first use, while the active supports the longer-term routine. Keep total humectant levels moderate so the serum does not feel sticky under makeup. ## Characteristics

Form: liquid active concentrate. Solubility: water. Addition: water phase at cool-down. Focus per our record: relaxed-looking expression lines, smoother skin, lifted look. INCI and active content: on the CoA. Supply: milliliter packs.

Original recipe: forehead and frown-line serum, 100 g

Phase A: distilled water 86.90 g, glycerin 3.00 g, propanediol 2.00 g, hydroxyethylcellulose 0.50 g; hydrate until clear. Phase B below 40 °C: IO Expression-Line Serum Active Liquid at the level on the CoA, here 4.00 g; Acetyl Hexapeptide-8 Powder 0.05 g dissolved in distilled water 1.00 g; panthenol 1.00 g; sodium hyaluronate 0.10 g predissolved. Phase C: preservative 0.90 g, cucumber extract 0.55 g. Mix gently and adjust pH to about 6.0.

Record the lot number in your batch log so every production run can be traced back to its certificate of analysis. Retain a small sample of each lot for at least the shelf life of the finished product, since it makes later quality questions much easier to answer.

Storage

Keep the bottle tightly closed in a cool place away from light. Reseal after use. Ships from Florida in milliliter packs.