Serum 1: Hydration and Skin Barrier Strengthening

This serum focuses on replenishing moisture, strengthening the skin's natural barrier, and soothing sensitivity, which can also help with the dry/oily imbalance and reduce clogged pores.

• Double Hyaluron Liquid: 5-10% (for deep and surface hydration)
• Ectoine: 2% (protects cells, strengthens barrier, anti-irritation)
• Panthenol (Vitamin B5): 5% (moisturizing, anti-inflammatory, wound healing)
• Ceramide Complex: 1-3% (restores skin barrier, reduces moisture loss, ideal for dry and sensitive skin - Note: User listed 10%, but 1-3% is typically recommended for efficacy and ease of formulation)
• Aloe Vera Extract: 3% (soothing, reduces irritation, moisturizing)
• Calendula Extract: 5% (anti-inflammatory, reduces redness, strengthens skin)
• Safe-B3™ (Niacinamide): 5% (improves barrier function, reduces oiliness, anti-inflammatory, mild brightening)
• GlucoBright™ (N-Acetyl Glucosamine): 4% (hydration, works synergistically with Niacinamide for mild brightening and improving skin texture)
• Sodium Lactate: 3% (part of Natural Moisturizing Factor, helps retain moisture)
• Suitable serum base: (e.g., distilled water, with a thickener if needed)

Serum 2: Melasma Treatment and Skin Nourishment

This serum targets hyperpigmentation and provides overall skin nourishment and antioxidant protection.

• Alpha Arbutin: 2% (inhibits melanin production to reduce dark spots and melasma)
• Licorice Extract: 1-2% (contains Glabridin, which helps with whitening and has anti-inflammatory effects - Note: User listed 5%, but 1-2% is the recommended usage rate for this extract)
• Ethyl Ascorbic Acid (Vitamin C Ethyl Ether): 3% (stable Vitamin C derivative for brightening and antioxidant benefits)
• Safe-B3™ (Niacinamide): 3-5% (helps with overall skin tone, barrier, and complements brightening agents)
• Vitamin E (Water-Soluble): 1% (antioxidant, helps protect the formula and skin)
• Suitable serum base: (e.g., distilled water, with a thickener if needed)

Serum 3: Wrinkle Treatment and Lifting

This serum focuses on reducing the appearance of wrinkles and improving skin firmness.

• Pep®-Coll (Palmitoyl tripeptide-5): 3% (stimulates collagen synthesis)
• Acetyl Hexapeptide-8 (Argireline): 5% (helps reduce muscle contractions that cause expression lines)
• Matrixyl 3000: 5% (peptide blend to stimulate collagen and repair skin)
• Acetyl Octapeptide-3 (SNAP-8): 8% (similar to Argireline, helps reduce expression lines)
• DMAE (SkinTight MD™) Liquid: 3-4% (helps increase skin firmness and elasticity - Note: Recommended usage is typically around 3%, higher concentrations can cause irritation)
• Pep®-Eye (Haloxyl): 3% (specifically targets dark circles and puffiness around the eyes, which you mentioned treating)
• Pep®-PP4 (Tego Pep 4-17): 5% (Palmitoyl Pentapeptide-4, helps reduce wrinkles and improve skin texture and elasticity)
• Coenzyme Q10 (Water-Soluble): 0.1-1% (antioxidant, helps repair photo-aging damage - Note: User listed 3%, but 0.1-1% is the recommended usage rate for this form)
• Vitamin E (Water-Soluble): 1% (antioxidant)
• Suitable serum base: (e.g., distilled water, with a thickener if needed)

I could not find specific information regarding "Sesaflash" in the available product data that matches its common description as a lifting ingredient.

To make these formulations, you would need to purchase the individual ingredients and a suitable base, then follow the mixing instructions for each ingredient (usually adding to the water phase, avoiding high heat unless specified).

Regarding the total cost, I am unable to provide pricing information for the ingredients or the complete formulations. You would need to check the prices of the individual components on the website.