- Zinc oxide (SPF according to ratio up to 20)
- Essential oils of your choice (for example, chamomile or lavender are great for sunscreens due to their calming properties; not necessary)
- Vitamin E (optional)
- Convenient spray bottle
First, determine the desired SPF factor that you want to obtain from the zinc oxide. Because I'm fair and because I always tend to underestimate the SPF, 20% and therefore an SPF of about 20 (which is about the most you can get out of ZnO) seemed ideal to me. It is quite difficult to estimate the total SFP of a future mixture, however I estimate my sunscreen to be at least 30, rather higher (at least what my chemical ratio calculations revealed). Individual percentages of ZnO roughly correspond to the total protection factor provided by.
I was wondering if the oil would work in a regular spray bottle (because, let's face it, there's some practicality there) - and if you play around with the zinc oxide a little at the beginning, you don't have to worry about a clogged tube.
Pour the required amount of ZnO into the mixing bowl (in my case, 2 parts for a total mixture of 10 parts of oils), add 2 parts of wheat germ oil to it (by the way, you can replace the oils as you like). Smelt the mixture for a while - ZnO gives in to the oil pretty well, there is no need to beat it beforehand with a mortar, you just have to put in the work and thoroughly knock the lumps against the edges of the mortar with a spoon. When the slurry is homogeneous, add 3 parts of raspberry oil, mix again. Do not add the second oil before the "thicker" version of the porridge is ready, the liquid mixture does not homogenize as well. (Hell, that's another word. Unite. That's nice Czech.)
Thanks to ZnO, the germ of the sunscreen will go nicely white, which will negate the golden mica powder. Again, I chose 2 parts, which seems ideal, as it nicely compensates for the whiteness of ZnO – also with this ratio, you will only have a slight and nice shine after application, not like Edward from Twilight. Don't worry about the mica powder, it's really a very fine shimmer, not any eye-popping glitter. Mix in mica and, if you plan to include it, also vitamin E; once the mixture is perfectly combined, transfer it to a container. The last part of the recipe will take you about two seconds. Fill the rest of the container with hazelnut oil, add an essential oil, shake - and you're done!
So, to summarize, I worked with 2 parts wheat germ oil, 3 parts raspberry oil, 5 parts hazelnut oil, 2 parts oxide, and 2 parts mica powder.
You may notice that after a few hours the ZnO starts to settle, but a little shaking will return the tanning oil to its original state.
I am honestly even more excited about the oil than the sunscreen, as it is a lighter and easier to spread version. Oils should guarantee minimal water resistance, but again, I'm a fan of reapplying after every swim, regardless of how waterproof a sunscreen claims to be.
All the oils used are very light, so you don't have to worry about comedogenicity - although of course we all react differently. Hazelnut oil is especially valued for its high content of vitamin E, which helps prevent skin burns - that's why I added an extra dose of pure vitamin to the oil. The oil is excellent for dry, aging or sun-stressed skin, so it is not only great for the process, but also as an after-sun care. Among other things, it also treats inflammation, accelerates the healing of small wounds and eczema, and although it is very nutritious, it is not too greasy and heavy. And by the way, we tried basil pesto with it, and the result was amazing!
I've already written countless lines about raspberry oil here - it's one of my biggest favorites, both because of the high SPF factor (50, wow, plus protection against UVA and UVB types of radiation), and because of the delicate fruity scent, which for me is surpassed only by cranberry oil. Like the hazelnut oil, the raspberry oil is also very light, suitable for treating eczema and other skin reactions, and rich in that magic "E". (Obviously I mean the magic letter that will protect your skin, not the other magic letter…) :)
In addition to wheat germ oil, it is also rich in vitamin B, and I can repeat myself. It protects the skin from external environmental influences, including sunlight (SPF 20) and helps to heal it, it is anti-inflammatory.
Zinc oxide blocks the sun's rays, creating a kind of protective coating on the skin against most harmful radiation; it fights against premature aging of the skin, but those of you who struggle with eczema or acne will also appreciate it, as it can reliably treat it - I cannot tolerate it, as far as acne is concerned (wait for the light cream with SPF, which I now she "brushed off" and fell in love again).
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