While the other serums you've asked about focus on exfoliating or correcting specific spots, the Guerniss Raw Glutathione + Hyaluronic Acid + Ceramide Serum (30ml) is your "Skin Barrier Bodyguard."
This formula is all about hydration, repair, and protection. It’s designed to soothe skin that might be stressed out from actives (like the Glycolic or Salicylic acids we discussed) while providing a deep, plumping glow.
The "Triple Threat" Ingredients
Glutathione: A master antioxidant that brightens the complexion and neutralizes environmental damage (pollution/UV).
Hyaluronic Acid: A moisture magnet that can hold up to 1,000 times its weight in water, instantly plumping fine lines and hydrating deep layers of the skin.
Ceramides: Essential lipids (fats) that make up your skin barrier. They "glue" your skin cells together to keep moisture in and irritants out.
Main Benefits
Deep Hydration: Eliminates tightness and flaky patches by flooding the skin with moisture.
Barrier Repair: Strengthens the skin’s natural shield, making it less reactive and sensitive over time.
Anti-Aging: Plumps up "dehydration lines" (fine lines caused by dryness) for a smoother look.
Radiance Boost: Glutathione works to brighten dullness while the hydration gives that healthy "dewy" finish.
How to Use for Maximum Glow
Damp Skin is Key: For the Hyaluronic Acid to work best, apply 2–3 drops to slightly damp skin. This gives the serum water to "grab" and pull into your pores.
Morning & Night: This serum is extremely gentle and non-reactive, so it’s perfect for both AM and PM use.
The Perfect "Chaser": If you use the Glycolic Acid or Salicylic Acid serums first, applying this afterward is a great way to prevent the dryness those acids can sometimes cause.
Seal It In: Always follow with a moisturizer to "lock" the Ceramides and Hyaluronic Acid into the skin.