When I received the sample of Yarok’s Feed Your Sunshine Hair Serum ($26/1 oz), I was packing and getting ready to take off for Maui, so I was excited to have the product with me to try out on the beach and everywhere else on the island that I planned on visiting while on vacation.

To borrow from Nisha: the hair care line is 100% vegan and free of alcohol, parabens and sulfates. If you have fine or thin hair, it’s important to remember that the serum is largely a blend of oils and really should be applied “sparingly,” depending upon your specific hair type. I noted that with my gray locks, I could use a bit extra of it around my hairline and it helped keep the frizzies in tow.

Aside from that, however, I am not of the mindset that this product does exactly what it says it’s intended to do. I did not notice very much sheen using it as a pre-heat styling product, and I honestly don’t feel like I had much protection with it from my flat iron as well. This could be because I have lots of salt ’n’ peppa hair, but I don’t experience this issue using an argan or Keratin-based products. I’ve burnt my hair pretty good before, so I’m very mindful of using a good heat protectant with my Sedu flat iron; however, I could tell from the results I was seeing, that this product wasn’t working to my level of expectation or satisfaction.

As I stated earlier, it seemed to work well around my hairline area where I experience frizzies galore in humid weather. Still, I’m not sure if it was truly working as well as it appeared to because the weather in Maui was gorgeous and not as ladened with humidity while I was there, or if this product’s saving grace is that it is abundantly capable of preventing frizz. Every summer in the humid-driven climate of Houston, my curly locks battle this nemesis religiously, so if this works in Houston, it’ll work anywhere, but I’ll have to wait and see. While on Maui my hair stayed in very good condition because the weather was so accommodating, so I cannot honestly credit the product as wholeheartedly fending off frizzes, given the cooler weather conditions. I must add, however, that I did not like the scent of the product at all. Not sure what the smell reminded me of, but it wasn’t attractive and I was self-conscious in that regard. I just didn’t like it at all.

I cannot, in good conscious give this a full thumbs-up as a shine serum or heat protector, but again, it depends on your hair type, condition and your hair’s needs. As for a frizz controller, if you have dry hair that begs for frizz control during humid climates, this may well work for you, if you can tolerate the scent. I haven’t yet been in serious enough humidity to aptly judge if it can hold its own in that arena.

[Editor’s note: To learn more about the brand, watch Marta’s video interview with Theadora Guzman of Yarok]

Ingredients: Jojoba Oil, Black Currant Seed Oil, Aloe Vera Oil, Wheat Germ, Tea Tree, Lemongrass Oil, Geranium Oil