So, there's a couple of things that make Toxique Girl a good rosemary product, and yes it's clean and high quality, but that's not actually where the value is here. Interestingly it's in the carrier oil that they include.
They offer 3 essential oils and argan oil in one pack, now, the rosemary, mint and castor aren't that expensive, the pure argan oil however is. Usually getting 500ml of a good argan oil will cost more than the entire Toxique Girl pack. And quite a lot more.
Of course the natural assumption would be that it's a watered down oil like half of the Amazon brands, but no, they sent us their 3rd party lab testing certificates when we requested and honestly the product was very high quality when we tested it. So this is actually the bargain it seems like.
There's no chemical add ons it's all just the pure oils. So, no complaints.
The way it works is of course that instead of making a one-bottle blend where the individual ingredients are in too low doses because there simply isn’t enough space like most companies do, Toxique offers a bundle of four individual bottles, three of which containing natural essential oils and one containing pure Argan oil as a carrier.
But, aside from the value, the main benefit is that it you the option of creating your own blend according to your individual needs, with the amount they give you being the max recommended to avoid scalp irritation.
So all in all, yes we can recommend Toxique.
As the brand is relatively new there aren't a whole host of reviews on third party platforms as of yet, so we can't currently score Toxique higher than a 8. We try to avoid doing that until we can find at least 50-100 verified reviews. But, the reviews we could find were pretty positive and the product testers that we gave it to did report positive results after 3 months of using the product. The couple of reviews we could find were mostly on reddit as responses to people asking if the product was any good.
There are a couple on third party sites such as the UK's SR, and again these were positive.
We haven't found any complaints about Toxique Girl online at the time of writing. So, all in all so far so good for this. So, we gave them the max score we could until there are more verified reviews available.
10 ml of Rosemary essential oil - Most importantly, rosemary oil acts as a DHT blocker (Dihydrotestosterone), a hormone linked to hair loss by inhibiting its production. It’s rich in antioxidant, anti-inflammatory, and antimicrobial properties, which can help protect the hair from damage caused by free radicals, battle dandruff and other scalp issues, and nourish the hair shaft, making it stronger and less prone to breakage. It is shown to improve blood circulation, allowing the hair follicles to receive more oxygen and nutrients. The studies show that it's actually as effective as minoxidil. 
10 ml of Peppermint essential oil - Peppermint oil contains menthol which has a stimulating effect on hair follicles by increasing blood flow with its cooling and vasodilating effects, as well as soothing itchy or irritated scalps. Regular use of peppermint oil delivers essential vitamins and minerals to support healthy hair growth as well as smoothing the texture of the hair. The calming aroma of the oil can reduce stress and prevent or mitigate conditions such as telogen effluvium, which is hair loss caused by stress. 
10 ml of Castor essential oil - Castor oil is packed with Vitamin E, minerals, and Omega-6 fatty acids which help with nourishing and moisturizing the hair to prevent dryness and reduce hair breakage. It can help with split ends, as well as improving circulation and fighting scalp infections. It contains ricinoleic acid which has been found to inhibit the hormone DHT, similarly to rosemary oil, it improves the appearance of fine and thin hair. 
500 ml of pure Argan carrier oil - Argan oil has earned its title as “liquid gold” by offering its remarkable properties ranging from nourishment to taming frizzy hairs. Rich in essential fatty acids and vitamin E, it’s the perfect natural conditioner, penetrating deep into the hair shaft to prevent dryness, frizz, and brittleness. Long term usage not only leaves the hair shiny and vibrant but it also improves the elasticity, leading to less breakage overall. Argan oil forms a protective barrier that shields the hair from harmful elements, such as chemicals, exposure to UV rays, pollution, and harsh weather conditions. 
in all Toxique hair oils are worth it for the price if not for anything else
than for the huge amount of pure Argan oil. Compared to other products in the
market, this one gives you an adjustable option as you have a guide of how to
use the oils to their full extent on their website
Not laced with additional ingredients that do more harm than anything, this blend seems to give you an all-natural method of growing out your hair faster than usual and most importantly it is shown to improve hair density which thickens your hair.
All in all we have to say Toxique is probably the best product of it's type we've seen. Highly recommended.
1 - https://pubmed.ncbi.nlm.nih.gov/25842469/
2 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4289931/
3 - https://pubmed.ncbi.nlm.nih.gov/35816075/
4 - https://pubmed.ncbi.nlm.nih.gov/35226791/