Protecting the skin from ultraviolet (UV) radiation is essential for health, particularly in individuals with very fair and sensitive skin (phototypes I and II). Today, sunscreen products are no longer used solely to achieve an aesthetically pleasing tan, but represent genuine preventive tools against sunburn, premature ageing, and skin cancer. However, many commercially available products contain chemical filters that can severely harm the marine environment, in particular coral reefs. This thesis analyses modern sunscreen products from two perspectives: the use of ingredients derived from medicinal plants and the selection of filters with reduced environmental impact (reef-safe). Specifically, the role of certain plant extracts (such as Calendula, Chamomile, Green Tea, and Turmeric) and vegetable oils (including jojoba, carrot, sesame, and raspberry) was investigated. Scientific literature demonstrates that, owing to their diverse properties, these ingredients can act as SPF boosters and stabilisers against oxidative stress induced by UV radiation. Nevertheless, their value is emphasised as purely complementary and not substitutive with respect to UV filters authorised by cosmetic regulations. In conclusion, the transition towards sustainable photoprotection requires the adoption of mineral filters (non-nano ZnO and TiO₂) or new-generation organic filters with low environmental impact, alongside integrated behavioural measures, such as avoiding the hottest hours of the day and wearing appropriate clothing. This highlights the need for formulations that synergistically balance measurable clinical efficacy, dermatological safety, and ecological responsibility.
Proteggere la pelle dalle radiazioni ultraviolette (UV) è fondamentale per la salute, soprattutto per chi ha la cute molto chiara e sensibile (fototipi I e II). Attualmente i prodotti solari non servono più solo per ottenere un'abbronzatura esteticamente gradevole, ma rappresentano veri e propri strumenti di prevenzione contro scottature, invecchiamento precoce e tumori della pelle. Tuttavia, molti prodotti presenti in commercio contengono filtri chimici che possono danneggiare gravemente l'ambiente marino, in particolare le barriere coralline. Questo lavoro di tesi analizza i prodotti solari moderni sotto due aspetti: l'uso di ingredienti derivati da piante officinali e la scelta di filtri a ridotto impatto ambientale (reef-safe). Nello specifico, è stato studiato il ruolo di alcuni estratti di piante (quali Calendula, Camomilla, Tè verde e Curcuma) e di oli vegetali (come jojoba, carota, sesamo e lampone). La letteratura scientifica dimostra che questi ingredienti, grazie alle loro diverse proprietà, possono agire da SPF booster e stabilizzanti contro lo stress ossidativo indotto dalle radiazioni UV. Tuttavia, si sottolinea il loro valore puramente complementare e non sostitutivo rispetto ai filtri UV autorizzati dalle normative cosmetiche. In conclusione, la transizione verso una fotoprotezione sostenibile richiede l'adozione di filtri minerali (ZnO e TiO₂ non-nano) o organici di nuova generazione a basso impatto ambientale, affiancati da misure comportamentali integrate, come evitare le ore più calde e l’uso di un abbigliamento appropriato. Emerge così la necessità di formulazioni che bilancino sinergicamente efficacia clinica misurabile, sicurezza dermatologica e responsabilità ecologica.
Prodotti solari: ruolo degli ingredienti derivati da piante officinali e valutazione ambientale dei filtri UV “reef safe"
BACCHETTO, NICOLE
2025/2026
Abstract
Protecting the skin from ultraviolet (UV) radiation is essential for health, particularly in individuals with very fair and sensitive skin (phototypes I and II). Today, sunscreen products are no longer used solely to achieve an aesthetically pleasing tan, but represent genuine preventive tools against sunburn, premature ageing, and skin cancer. However, many commercially available products contain chemical filters that can severely harm the marine environment, in particular coral reefs. This thesis analyses modern sunscreen products from two perspectives: the use of ingredients derived from medicinal plants and the selection of filters with reduced environmental impact (reef-safe). Specifically, the role of certain plant extracts (such as Calendula, Chamomile, Green Tea, and Turmeric) and vegetable oils (including jojoba, carrot, sesame, and raspberry) was investigated. Scientific literature demonstrates that, owing to their diverse properties, these ingredients can act as SPF boosters and stabilisers against oxidative stress induced by UV radiation. Nevertheless, their value is emphasised as purely complementary and not substitutive with respect to UV filters authorised by cosmetic regulations. In conclusion, the transition towards sustainable photoprotection requires the adoption of mineral filters (non-nano ZnO and TiO₂) or new-generation organic filters with low environmental impact, alongside integrated behavioural measures, such as avoiding the hottest hours of the day and wearing appropriate clothing. This highlights the need for formulations that synergistically balance measurable clinical efficacy, dermatological safety, and ecological responsibility.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/117729