Improving Your Sunscreen Formula

It's common for sunscreen formulas, especially water-based ones containing ingredients that reduce tackiness like PMMA Booster, to sometimes feel dry or cause makeup to settle into pores. The 4% concentration of PMMA Booster (SPF/Color Booster) you are using is effective for boosting SPF, but its texture effects may need to be balanced with other ingredients.

Here's how you can adjust your formula to address the dryness and improve pore appearance without using silicones:

Increase Moisture

The dryness you feel is likely due to the overall balance of your water-based formula. While 0.2% Sodium Hyaluronate provides some hydration, it might not be sufficient to counteract the feel of the PMMA Booster and keep the skin adequately moisturized for comfortable wear and smooth makeup application.

• Increase Sodium Hyaluronate: You can try increasing the concentration of the Sodium Hyaluronate you are currently using.
• Consider Super-HYA™: For enhanced moisture that absorbs better into the skin, consider incorporating Super-HYA™ (Sodium Acetylated Hyaluronate). This modified hyaluronic acid offers deeper hydration and can improve the skin's feel. It is typically used at a rate of 0.01-0.1%.

Adding more humectants will significantly improve the skin's hydration level and the overall feel of the sunscreen.

Improve Pore Appearance (Non-Silicone)

To prevent makeup from settling into pores and create a smoother surface without using silicones, you can add ingredients known for their soft-focus or blurring effects:

• QuikBlur™: This is a water-dispersible liquid form of Polymethylsilsesquioxane. It provides an instant blurring effect to camouflage pores and wrinkles and leaves the skin feeling soft and smooth without greasiness. It can be used at a rate of 1-5%.
• UltraBlur™: This is a specially processed Silica designed for high skin blurring ability. While it absorbs less oil than standard silica, it is effective for creating a smooth, blurred look. It can be used at a rate of 0.1-10%.

Incorporating one of these ingredients will help create a smoother skin surface, reducing the visibility of pores and providing a better base for makeup.

Regarding 4% PMMA Booster

The 4% concentration of PMMA Booster (SPF/Color Booster) is within the recommended range for boosting SPF and has achieved a good SPF value for your formula. The product description suggests 3-5% for SPF boosting and 5-7% for softening. It's not necessarily too high for its SPF function, but its texture contribution needs to be balanced with sufficient moisturizing and skin-smoothing ingredients in your formula.