Peptides and Retinol Together: A Simple PM Routine Order
How to layer an eyelash peptide serum and a retinol gua sha cream without interfering with either ingredient.
Using peptides and retinol together is straightforward when you apply them in the right order and give each product a moment to absorb. Apply the COSNORI Long Active Eyelash Serum first, let it dry, then massage in the Anua Collagen Retinol Refining Gua Sha Cream on the neck and jawline. Start retinol on alternate nights if your skin is new to it.
Who This Routine Is For
This pairing works for anyone who wants to support lash density and tackle neck and jawline firmness at the same time — two areas that often get overlooked in a standard skincare routine. If you are new to retinol, just coming off a procedure, or pregnant or breastfeeding, read the cautions section below before starting; the two products have different safety profiles.
The routine is low-effort by design. Both products come with built-in applicators, require no measuring, and can slot into either your morning or evening routine. The main thing to get right is order and timing, which is what this guide covers.
Why the Order Matters
The general rule with actives is to go lightest texture first. The COSNORI Long Active Eyelash Serum is a water-based, fast-absorbing liquid. The Anua Collagen Retinol Refining Gua Sha Cream is a cream. Applying the serum first means it can reach the lash roots and brow area without a cream barrier slowing it down.
There is also a more practical reason: the gua sha cream involves five minutes of massage on the jaw and neck. If you do that first, you are touching your face with cream-coated hands and an applicator head before the delicate eye area serum has had a chance to settle. Keep the steps separate and in order, and neither product has to compete with the other.
Step One: The Eyelash and Brow Serum
After cleansing, take the COSNORI Long Active Eyelash Serum and use the C-curl brush tip along the lash line from root to tip, then switch to the ball tip for the roots and brow area. The formula contains Myristoyl Pentapeptide-17 and Copper Tripeptide-1, two peptides commonly used in lash-focused formulations, alongside Centella Asiatica Extract and Sodium Hyaluronate for moisture support. It is unscented, oil-free, and absorbs quickly.
The oil-free formula is worth noting if you wear eyelash extensions — the brand confirms it will not affect lash adhesive. Wait about thirty seconds to a minute after application before moving to the next step, just long enough for the serum to fully dry down.
The serum is designed for daily use, so it can go on in the morning, at night, or both. That makes it the easiest habit to build: it goes on right after cleansing, every single time.
Step Two: The Gua Sha Neck and Jawline Cream
Once the lash serum has settled, turn the gua sha head on the Anua Collagen Retinol Refining Gua Sha Cream to the ON position and apply cream directly to the jaw, neck, and décolleté. Massage upward for about five minutes using the W-shaped metal roller. The built-in applicator does the work of a separate gua sha tool while dispensing the cream at the same time.
The formula combines encapsulated retinol with Niacinamide, hydrolyzed collagen, Oligopeptide-2, and Dipeptide Diaminobutyroyl Benzylamide Diacetate. Retinol is most effective and least prone to degradation when used at night, so if you are only using this product once a day, make it your PM step. After use, wipe the applicator head with an alcohol swab or dry tissue and turn it back to the OFF position.
