DIY Skincare Formulas for Acne-Prone Skin with Vitamin C, B3, Pitera, and Repair Activator

Subject: DIY Skincare Formulas for Combination, Acne-Prone Skin

Hello,

Thank you for reaching out! It's great that you've had good results with the Vitamin C E Ferulic kit and are looking to explore more DIY options tailored to your skin concerns (combination, oily T-zone, clogged pores, acne marks, redness) and preferences (Pitera, Perfect-C, Repair Activator).

Regarding your question about using Vitamin C (specifically L-Ascorbic Acid form like in the kit) and Vitamin B3 (Niacinamide) together: As the staff mentioned, it's generally recommended to use them at different times of the day to avoid potential irritation or reduced efficacy, although modern formulations can sometimes mitigate this. A simple approach is to use Vitamin C in the morning and Vitamin B3 in the evening.

Based on your skin type, concerns, and interest in specific ingredients, here is a proposed multi-step DIY routine with formulas that are relatively easy to mix:

Step 1: Intermittent Treatment Toner (for clogged pores)
Use this toner 2-5 days consecutively when you notice clogged pores, then reduce frequency or stop until needed again.

• Pitera (Galactomyces Ferment Filtrate) (ID 357): 95%
• Salicylic Acid EZ (ID 766): 5%
• Mixing: Combine Pitera and Salicylic Acid EZ. Stir or gently shake until Salicylic Acid EZ is fully dissolved.

Step 2: Morning Serum (Antioxidant & Brightening)
This oil-based serum focuses on Vitamin C (Perfect-C) and Vitamin E for antioxidant protection and brightening. Use a small amount, especially on oily areas.

• Perfect-C TransDerm (Ascorbyl Tetraisopalmitate) (ID 499): 10%
• Vitamin E Acetate (ID 109): 1%
• Squalane (ID 116): 89%
• Mixing: Combine all ingredients and stir well until uniform.

Step 3: Evening Serum (Repair, Pore, Redness, Blemish Marks)
This water-based serum combines Repair Activator, Vitamin B3, and Vitamin B5 to address repair, pore appearance, redness, and blemish marks.

• Repair Activator (Bifida Ferment Lysate) (ID 259): 10%
• Safe-B3 (Niacinamide) (ID 74): 5%
• Panthenol (Vitamin B5) (ID 111): 2%
• Hyaluronic Acid Solution (1%) (ID 124): 20%
• Propanediol 1,3 (ID 887): 5%
• Mild Preservative (ID 227): 1%
• Distilled Water: q.s. to 100% (approx. 57%)
• Mixing: In a clean container, combine Distilled Water, Propanediol 1,3, Panthenol, Safe-B3, Repair Activator, Hyaluronic Acid Solution (1%), and Mild Preservative. Stir thoroughly until all ingredients are dissolved and the serum is uniform. Gentle warming (e.g., in a warm water bath) can help dissolve powders like Safe-B3 faster, but is not strictly necessary if you stir patiently.

Step 4: Evening Moisturizer (Light Hydration & Barrier Support)
A light cream to provide hydration and support the skin barrier without feeling heavy on oily areas. This formula requires basic heating and mixing for emulsification.

• Distilled Water: q.s. to 100% (approx. 70%)
• Propanediol 1,3 (ID 887): 5%
• Panthenol (Vitamin B5) (ID 111): 2%
• Isononyl Isononanoate (ID 100): 5%
• Squalane (ID 116): 3%
• Ceramide Complex (ID 255): 3%
• Satin Cream Maker (ID 247): 5%
• Mild Preservative (ID 227): 1%
• Mixing:
  1. Water Phase: Combine Distilled Water, Propanediol 1,3, and Panthenol in a heat-resistant container. Heat to 70-75°C.
  2. Oil Phase: Combine Isononyl Isononanoate, Squalane, Ceramide Complex, and Satin Cream Maker in a separate heat-resistant container. Heat to 70-75°C.
  3. Emulsification: Pour the oil phase into the water phase while mixing continuously with a stick blender or whisk until a uniform emulsion forms.
  4. Cooling: Switch to slower stirring and continue mixing while the cream cools down.
  5. Preservation: Once the cream has cooled below 40°C, add the Mild Preservative and stir well.

This routine allows you to target different concerns with dedicated products, similar to your current multi-step approach, but using DIY formulations with ingredients you are interested in. You can adjust concentrations slightly or swap ingredients as you become more comfortable with DIY. Always perform a patch test before applying a new product to your face.

Let me know if you'd like any adjustments or alternative formulas!