Test result preview
The Rosemary Oil Hair Tonic Spray from the COSPHERA brand is a product designed to stimulate hair growth .
The product contains fresh rosemary oil, peppermint oil, caffeine and the active ingredient RootBioTec. According to the seller, it supports the regeneration of the scalp and strengthens the hair roots.
According to the seller, this product is vegan, skin-friendly and hormone-free.
In the practical test, the hair tonic impressed with its ease of use – it can simply be applied with a practical spray head. It should be applied to the scalp once a day in the morning or evening. After applying the product, the hair remained fresh and did not become greasy. It was also easy to comb through.
On a positive note, no artificial fragrances were added.
Overall, it is an intensive but very fragrant and nourishing product that can be used to stimulate hair growth and strengthen the hair roots.
Advantages
- Can support hair growth and strengthen hair roots
- With practical spray head
- Very economical
Disadvantages
- Quite intense, yet very pleasant odour
The first impression
Packaging and contents
Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?
Criterion
Remark
Score achieved*
Product protection
Carton is sturdy, product sufficiently protected
Points
Sustainability Packaging
Unnecessary packaging waste has been avoided, the plastic film protects the product components
Points
Package contents & scope
Complete
Points
Instructions for use
Product is self-explanatory
Points
TOTAL
98
Points
Weighting: 20%
*Themaximum score is 100 points
This product was delivered in a cardboard box that was well suited to the size of the product.
With the exception of the product itself, no plastic or other avoidable packaging materials were used.
Instructions for use are printed on the side of the product box.
Even if the product does not contain any harmful substances , it would be desirable to include a note on the box stating that the product is explicitly suitable for adults.
The first time in your hand
Product processing and appearance
Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?
Criterion
Remark
Score achieved*
Visual appearance
Attractive design
Points
Processing
Very good workmanship
Points
Stability
Very stable
Points
Sustainability of the product
No details, but use of high-quality materials
Points
TOTAL
95
Points
Weighting: 20%
*Themaximum score is 100 points
When you pick up the product for the first time , you immediately notice its practical size. The spray is handy and light.
The spray head makes a robust and stable impression, so it can be assumed that the workmanship will allow long-term use until the product is used up.
In terms of design, the product is convincing: it is visually very clean in light colours and stands out from many products from discount stores at first glance thanks to its restrained design. The colouring indicates the use of natural and high-quality ingredients .
Overall, it is a high-quality and well-designed product that leaves a positive first impression.
This is the result of our laboratory test
Does the manufacturer keep its advertising promises?
Our laboratory test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the ingredients and product claims of the test article.
Criterion
Remark
Score achieved*
Caffeine
High caffeine value
Points
Vitamin B3 (niacin)
Very high vitamin B3 value
Points
Vitamin B6 (pyridoxine)
Average vitamin B6 value
Points
TOTAL
83
Points
Weighting: 45%
*Themaximum score is 100 points
The COSPHERA Hair Growth Tonic has unusually high concentrations of caffeine and vitamin B3, which are significantly higher than the usual market values and could make the product particularly intensive. The high dosage of caffeine and vitamin B3 could be particularly beneficial for people with severe hair loss or slow hair growth (see Karger Kompass Dermatol 2013, p. 25 f.). Caffeine inhibits the hormone DHT, which is responsible for hair loss, promotes blood circulation and stimulates hair growth by prolonging the growth phase or anagen phase (see Karger
Compass Dermatol 2013, p. 25 f.). It also supports the supply of oxygen and nutrients to the hair follicles (see Karger Kompass Dermatol 2013, p. 25 f.). Vitamin B3 promotes blood circulation in the scalp, improves the supply of nutrients to the hair follicles and helps to strengthen the hair structure (cf.
to strengthening the hair structure (see Wuerch, Urgoiti & Yong 2023, p. 1024 ff.). However, the concentration of vitamin B6 in COSPHERA Hair Growth Tonic is average. Vitamin B6 supports protein formation and metabolism, which is essential for healthy hair growth (see Sallabi, Alhmoudi, Alshekaili & Shah 2021, p. 1 ff.). It has an
also has an anti-inflammatory effect, which can be helpful in cases of hair loss due to skin irritation (see Sallabi, Alhmoudi, Alshekaili & Shah 2021, p. 1 ff.).
Test plan
You can find a detailed insight into the evaluation criteria of the practical part of the test and the distribution of points here. If you are also interested in the evaluation of our other test criteria, please read our document on the evaluation process.
Price/performance ratio
and ratings from consumers
Finally, we analyse how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.
Criterion
Remark
Score achieved*
Price / performance ratio
Very good performance, in the mid-price segment
Points
Rating cut
4.4 out of 5.0 on Amazon
Points
TOTAL
75
Points
Weighting: 15%
*Themaximum score is 100 points
On the Amazon platform, consumers rate the product with an average of 4.4 stars. In individual cases, there is criticism that no visible results were achieved. On the other hand, the fact that hair loss has decreased and the pleasant odour are highlighted as positive aspects. In our practical test, we were able to confirm that the tonic smells very intense but pleasant and that the hair feels stronger after repeated use.
Prices of up to €35.95 are charged on the Internet for equivalent products. Very affordable products are available from as little as €8 .26. The hair tonic from COSPHERA is therefore currently in the middle price segment with a price of €18.90. For the quality and performance received, the price-performance ratio is very good.
Overall result
Weighting
Score achieved*
1. packaging & contents
20%
Points
2. product processing & appearance
20%
Points
3. in the laboratory test
45%
Points
4. price/performance & consumer reviews
15%
Points
TOTAL
Points
*Themaximum score is 100 points
