Pregled sestave in varnosti kozmetičnih sestavin v kremah za roke

Mohorko, Michelle (author), Sollner Dolenc, Marija (mentor)

Kreme za roke so med najbolj priljubljenimi kozmetičnimi izdelki. Poleg tega, da nam pomagajo izboljšati strukturo kože in nadomestiti izgubljeno vlago, tudi učinkovito ščitijo pred škodljivimi vplivi okolja. Njihovi negovalni in pomirjajoči učinki prispevajo k zdravemu videzu kože rok, kar je še posebej opazno v hladnejših mesecih, ko koža zaradi zunanjih dejavnikov potrebuje dodatno zaščito in nego. Najpogostejši problem, s katerim se srečujemo, je suha in občutljiva koža rok. Pomembno je, da glede na tip kože izberemo kremo, ki bo zadostovala njenim potrebam. Poleg ustrezne izbire je pomembna tudi njihova varnost, še posebej, kadar je koža že poškodovana. Namen diplomske naloge je bil pregledati sestavine v kremah za roke in oceniti njihovo varnost. V pregled smo vključili tako certificirane kot necertificirane izdelke, zato nas je zanimala tudi razlika med njimi. Skupno smo analizirali 81 krem za roke, ki smo jih glede na tip kože in prisotnost certifikata razvrstili v štiri skupine in nato primerjali med sabo. Prva skupina so bile kreme za suho kožo brez certifikata, druga skupina kreme za suho kožo s certifikatom, tretja kreme za občutljivo kožo brez certifikata in četrta skupina kreme za občutljivo kožo s certifikatom. Med temi smo pregledali 41 krem za roke brez certifikata, pri čemer je bilo 21 namenjenih suhi koži, 20 pa občutljivi. Preostalih 40 krem s certifikatom je bilo enakomerno razdeljenih in sicer, 20 krem za suho in 20 krem za občutljivo kožo. Kljub temu, da smo našli primerljivo število certificiranih in necertificiranih izdelkov, smo ugotovili, da je v fizičnih trgovinah še vedno največja ponudba necertificiranih krem za roke. Pri določanju varnosti izbranih krem smo posebno pozornost namenili potencialno alergenim snovem, kot so barvila, dišave in konzervansi. Med dišavami se je najpogosteje pojavil linalol (49,4 %), med barvili CI 14700 (red 4) (2,5 %) in med konzervansi fenoksietanol (32,1 %). Certificirani izdelki imajo ožji nabor dišav, barvil in konzervansov, saj morajo biti ti večinoma naravnega izvora ali prisotni v manjših koncentracijah. Kljub temu smo ugotovili, da običajno vsebujejo podobne sestavine kot kreme brez certifikata. Pri pregledu toksikoloških podatkov smo ugotovili, da so vse uporabljene sestavine varne v priporočljivi koncentraciji. Na osnovi naših rezultatov lahko rečemo, da so kreme za roke varne za uporabo, pri čemer ne izključujemo možnosti pojava alergijskih reakcij pri posameznikih. Prav tako smo ugotovili, da certificirani izdelki niso zagotovilo, da njihove sestavine ne povzročajo preobčutljivih reakcij, temveč samo potrjujejo, da vsebujejo večinoma naravne sestavine.

• Language: Slovenian
• Keywords: kozmetični izdelki, kreme za roke, dišave, barvila, konzervansi, varnost
• Work type: Bachelor thesis/paper
• Organization: FFA - Faculty of Pharmacy
• Year: 2024
• PID: 20.500.12556/RUL-162848
• Publication date in RUL: 28.09.2024

Secondary language

• Language: English
• Title: Composition and safety review of cosmetic ingredients in hand creams

Abstract

Hand creams are among the most popular cosmetic products. In addition to helping improve skin texture and replace lost moisture, they also effectively protect against harmful environmental effects. Their nourishing and soothing effects contribute to a healthy appearance of the hands, which is especially noticeable in colder months when the skin needs extra protection and care due to external factors. The most common issue we face is dry and sensitive skin on the hands. It is important to choose a cream that meets the needs of the skin type. Besides proper selection, safety is also crucial, especially when the skin is already damaged. The purpose of this thesis was to review the ingredients in hand creams and assess their safety. We included both certified and non-certified products in our review, so we were also interested in the differences between them. We analyzed a total of 81 hand creams, which we categorized into four groups based on skin type and certification status, and then compared them. The first group consisted of non-certified creams for dry skin, the second group included certified creams for dry skin, the third group was for non-certified sensitive skin creams, and the fourth group was for certified sensitive skin creams. Among these, we reviewed 41 non-certified hand creams, of which 21 were intended for dry skin and 20 for sensitive skin. The remaining 40 certified creams were evenly divided, with 20 for dry skin and 20 for sensitive skin. Despite finding a comparable number of certified and non-certified products, we found that physical stores still offer a greater selection of non-certified hand creams. In determining the safety of the selected creams, we paid special attention to potentially allergenic substances such as dyes, fragrances, and preservatives. The most common fragrance was linalool (49,4 %), the most frequent dye was CI 14700 (Red 4) (2,5 %), and the most common preservative was phenoxyethanol (32,1 %). Certified products have a narrower range of fragrances, dyes, and preservatives, as these must be mostly of natural origin or present in smaller concentrations. Nevertheless, we found that they usually contain similar ingredients to non-certified creams. In reviewing the toxicological data, we found that all the used ingredients are safe at recommended concentrations. Based on our results, we can say that hand creams are safe for use, although the possibility of allergic reactions in individuals cannot be excluded. We also found that certified products are not a guarantee that their ingridients won't cause hypersensitive reactions, but only confirm that they mostly contain natural ingredients.

• Keywords: cosmetic product, hand creams, fragrances, dyes, preservatives, safety