Sea fennel is a perennial herb that grows near the sea and is traditionally used in perfume and cosmetics manufacturing. In recent years, there has been a growing interest in the biological activity of sea fennel, especially the potential health benefits of its extract.
The study found. 
A recent study published in the journal Food suggests that Croatian sea fennel may be rich in preservatives and anti-aging metabolites. The researchers conducted a comparative analysis of sea fennel from France and Croatia and found that Croatian sea fennel has the following characteristics:
Contains a unique chemical composition, rich in junene and limonene, volatiles and hydrosols, and has a higher antioxidant potential than ethylene oxide, with antimicrobial activity against Staphylococcus aureus and Pseudomonas aeruginosa, with antityrosinase and anticollagenase activityCase Study.
Researchers have conducted further research on the anti-aging potential of Croatian sea fennel. They found that Croatian sea fennel extract was able to effectively inhibit tyrosinase and collagenase activity. Tyrosinase is an enzyme that causes hyperpigmentation, while collagenase is an enzyme that causes aging. Therefore, Croatian sea fennel extract may have a slowing effect on aging.
Conclusion. Croatian sea fennel is a natural product with potential value. It may be rich in preservatives and anti-aging metabolites and has a variety of biological activities. In the future, more research is needed to further validate the health benefits of Croatian sea fennel and develop its potential for application in cosmetics and medicine.
Reference: Politeo, O, urlin, p., brzović, p., auzende, k., magné, c., generalić mekinić, i. (2023). volatiles from french and croatian sea fennel ecotypes: chemical profiles and the antioxidant, antimicrobial and antiageing activity of essential oils and hydrolates. foods, 13(5), 695, doi – 10.3390/foods13050695,