Suntris SPF 50 Advanced Multi Protector Lotion, like many sunscreens, contains ingredients that can sometimes oxidize after application, which might cause a slight change in skin tone, including a greyish or ashy appearance for some users.

• Oxidation: This is a chemical reaction that can occur when sunscreen ingredients interact with air or skin oils, potentially altering the lotion's color.

• Skin Type and Application: The effect can vary depending on your skin type, how much product you apply, and whether it is blended well.

• Product Formulation: Some sunscreens with physical blockers like zinc oxide or titanium dioxide are more prone to leaving a white or grey cast, especially on darker skin tones.

• Tips to Minimize Grey Cast:

  • Apply a thin, even layer and allow it to absorb fully.
  • Consider using a moisturizer or primer underneath.
  • Look for formulations labeled as "sheer" or "invisible".

If you notice persistent greying or irritation, it might be worth trying a different sunscreen formulation or consulting a dermatologist for personalized advice.