G.M. Collin Intense Moisture Serum – Medical Line Hydrating Treatment Serum (30 ml)

G.M. Collin Intense Moisture Serum is a professional-tier hydrating treatment serum from the G.M. Collin Medical Line, engineered for skin that is visibly dehydrated, tight, or stripped of its moisture reservoir. The lightweight, fast-absorbing formula floods the skin with multiple-molecular-weight hyaluronic acid and humectants to restore plumpness, smooth surface texture, and rebuild the skin's hydration capacity.

Who It Is For: Anyone dealing with persistent dehydration, tight or flaky skin, fine dehydration lines, post-procedure dryness, frequent travel, or environmental dryness. Suitable for all skin types — including oily and combination skin that needs hydration without heavy occlusives.

Key Benefits: Delivers multi-depth hydration through hyaluronic acid working at different molecular weights — surface plumping plus deep dermal water-binding. Restores barrier function so the skin retains moisture longer between applications. Visibly softens fine lines caused by dehydration, improves overall radiance, and primes the skin for any moisturizer layered on top.

How It Fits Your Routine: Apply morning and night after cleansing and toning, before your moisturizer. Pairs beautifully with the A.G.E. Skin Defense Cream for daytime anti-aging or with the Retinol Complex Night Cream at night.

Step 1: Cleanse and apply your toner (if used).

Step 2: Dispense 3–4 drops onto clean fingertips.

Step 3: Press evenly over the face and neck, avoiding the eye area.

Step 4: Allow 30–60 seconds to fully absorb.

Step 5: Follow with your moisturizer and (in the morning) SPF 30+. Use morning and night.

Key Active Ingredients:

Multi-Molecular-Weight Hyaluronic Acid — Hydrates at multiple skin depths for surface plumping and deep dermal water-binding.

Glycerin & Humectants — Draw and bind moisture into the skin.

Barrier-Support Complex — Restores skin's natural moisture retention capacity.

*Ingredient Note: Refer to the product packaging for the most up-to-date and complete ingredient list before use, especially if you have sensitivities or allergies. Formulations are subject to change by the manufacturer.*

Can oily skin use this?
Yes. The serum is hydration-focused, not occlusive. Oily and combination skin types benefit from the surface plumping without added shine.

Does it work under makeup?
Yes — it absorbs in seconds and primes the skin to hold makeup beautifully.

Can I use it with retinol?
Yes. Apply this serum first, let it absorb, then layer your retinol or other treatments.

Is it safe during pregnancy?
Yes — the formula is fragrance-free and contains no retinoids or restricted actives. Safe for pregnancy and nursing.

How is it different from a $30 hyaluronic acid serum?
Medical Line concentration and multi-molecular-weight delivery. Surface-only HA molecules can't penetrate the dermis — this formula uses multiple weights to hydrate at different depths.

How long does the 30ml bottle last?
Twice-daily use lasts approximately 2–3 months.

At Le Petit Spa Charlotte, **Intense Moisture Serum** is our go-to for clients whose skin feels tight, looks dull, or has been through any recent stressor — travel, peels, microneedling, microcurrent, or even just a Charlotte winter. It's a Medical Line serum, which means the hyaluronic acid is multi-molecular-weight: it hydrates at multiple skin depths simultaneously rather than just sitting on the surface. That's the difference between a $30 drugstore HA and a professional serum. The lightweight texture absorbs in seconds, primes the skin to better absorb everything you layer on after it, and is universally compatible — stack it with Vitamin C, retinol, peptides, anything. We recommend it especially under our **A.G.E. Skin Defense Cream** for daytime or under the **Retinol Complex Night Cream** at night. Beautiful for oily skin too — hydration without heaviness.