It can leave a bit of white cast due to zinc oxide. But it won’t linger for long.

Lumpiness in homemade sunscreen is a common issue when mixing zinc oxide — don’t worry, it’s totally fixable! Here’s what you can try:

Sift the zinc oxide first using a fine mesh strainer or flour sifter before mixing — this helps break up clumps beforehand.

OR use a hand blender or mini whisk to mix the zinc oxide thoroughly and evenly. Stir continuously for a few minutes until you get a creamy texture.

OR if it’s still a bit grainy, you can strain the final mixture through a cheesecloth or fine strainer to smooth it out.

Hope it helps!

thank you so much for your answer in advance!

I’m not the poster but this happened to me.
According to the instructions, you’re only suppose to put the zinc oxide AFTER everything has been heated and melted. I accidentally cooked it the first time and it left that white residue, but when I didn’t cook it I wasn’t left with it, hope this helps 🙂

1. How many ml is 1/2 cup and 1/4 cup?

2. I tried this but struggled with melting zinc oxide. It left white residue at the bottom of my pan. Have I done anything wrong? Any tips to avoid this please?….

I am interested in making my own sunscreen lotion and have a question about how much Titanium Dioxide, Raspberry seed oil and Carrot seed oil to a gallon of carrier oil to make a SPF50 to protect tattoo ink.

Hi Savanna,
You won’t lose its composition, but it will change color.