Serum Formula Review for Anti-Aging & Brightening (Mature Combination Skin)

Based on the serum formula you provided, here is a review:

This serum formulation includes several active ingredients targeting anti-aging and skin brightening, which are suitable goals for mature skin (age 55).

• Anti-aging: Ingredients like Repair Activator™, Plankton GP4G™, and NAT-RIBOSE™ are included to help improve skin repair, energy, elasticity, and reduce the appearance of wrinkles. The concentration of Repair Activator™ at 10% is quite high and potentially very effective. Hyaluronic Acid (Nano Molecule) at 0.2% provides hydration, which is also important for reducing the appearance of fine lines.
• Skin Brightening: Activated Resorcinol at 1% is a known ingredient for targeting hyperpigmentation and improving skin tone. Papaya Enzyme (Papain) at 1% acts as an enzymatic exfoliant, helping to remove dead skin cells and improve skin texture and brightness.
• Base and Texture: The formula uses Distilled Water as the main base. Sweet Almond Oil at 10% provides emollience and moisturization. For combination skin, 10% oil in a serum might feel a bit heavy or oily in the T-zone. You might want to observe how your skin feels after application. SiliSolve Plus™ is included as an emulsifier to properly mix the oil and water phases, which is necessary for this formula.
• Penetration and Preservation: Reservoir-Tech helps enhance the delivery of ingredients into the skin. Phenoxyethanol SA (Optiphen Plus) is a necessary preservative to keep the product safe from microbial growth.

Overall, the formula is well-designed with multiple active ingredients addressing your concerns. The concentrations of the actives seem appropriate for targeting wrinkles and brightening. The main point to consider for combination skin is the 10% Sweet Almond Oil, which might make the serum feel richer than typical serums. If you find it too heavy, you could consider slightly reducing the oil percentage or substituting part of it with a lighter ester or oil suitable for combination skin, but this would require re-balancing the formula with the emulsifier.

The staff's note about carefully following the instructions for SiliSolve Plus is important, as proper emulsification is key to the stability and texture of the serum.