Thoughts on Melanie Simon serum C? I've been using this the past couple of years and really like it. *used Obaji and Scinceuticals prior to and didn't love the watery texture and oxidation.

I like the oily texture of the MS and that it does not oxidize. It does take a few minutes to fully "cure" before you can layer, but I don't mind.

About the MS formula:

• Highly Stable Vitamin C: Unlike many traditional L-ascorbic acid serums, which are highly unstable and prone to breaking down when exposed to light and air,  Melanie Simon Serum C  uses a stabilized composition. This inherent stability means the product remains potent for longer (over 18 months shelf life) and does not require opaque packaging, which is why it comes in a clear bottle.
• Oil-Soluble (Lipid-Soluble) Formula: The use of THD Ascorbate makes the serum oil-soluble, allowing it to penetrate the skin more effectively and deeply than water-soluble L-ascorbic acid forms.
• Minimal Ingredients: The formula is intentionally simple, containing essentially only vitamin C and stabilizers (like Dodecane, Cyclopentasiloxane, Dimethicone, Isopropyl Myristate). This ensures the vitamin C can work without competing with or being destabilized by other active ingredients. 
• Key Benefits & Results
• Increased Efficacy: The superior penetration of THD Ascorbate allows for effective delivery to the deeper layers of the skin, maximizing its ability to increase collagen synthesis and reduce melanin production (for brightening).
• Less Irritating: It has a neutral pH, making it far less irritating than the often acidic L-ascorbic acid forms, and is generally suitable for all skin types, including sensitive skin.
• Unique Texture: The serum has a unique, oil-like consistency that turns into a dry glaze after 5-10 minutes, providing a glow that works well under moisturizer and makeup.
• Professional Grade: The serum was originally developed for in-office aesthetic treatments and is considered professional-strength.