Vrednotenje senzoričnih lastnosti krem s hialuronsko kislino in šamponov za lase z izvlečkom amle (Emblica officinalis)

Zavrl, Karmen (author), Gosenca Matjaž, Mirjam (mentor), Bjelošević Žiberna, Maja (comentor)

Kozmetika predstavlja velik del našega vsakdanjega življenja. Vloga kozmetologije je še posebej pomembna na področju nege kože, kjer v ospredje čedalje bolj prihaja naravna kozmetika in kozmetika, značilna za azijske države. Glede na to, da je na trgu prisotnih veliko različnih izdelkov in je posledično konkurenca med podjetji velika, si le-ta vse bolj prizadevajo za zadovoljstvo uporabnikov, pri čemer postaja senzorično vrednotenje pomemben del razvoja kozmetičnega izdelka. V okviru diplomske naloge smo izvedli senzorično vrednotenje krem za roke in šamponov za lase, katere recepture so bile prehodno razvite na Katedri za farmacevtsko tehnologijo, prav tako za namen diplomske naloge. Izdelke smo pripravili v laboratoriju, njihovo senzorično vrednotenje pa je potekalo v domačem okolju po principu hedonskega afektivnega testiranja. S pomočjo vprašalnika je 12 prostovoljk, starih med 20 in 50 let, ocenjevalo prvi vtis o izdelkih, prvi stik z izdelki in lastnosti med in po nanosu izdelkov. V testiranje smo vključili štiri različne vzorce krem za roke, in sicer so se ti razlikovali v deležu arganovega in avokadovega olja ter so, oziroma niso vsebovali hialuronske kisline. V okviru vrednotenja šamponov za lase so prostovoljke ocenjevale tri različne formulacije, in sicer osnovno formulacijo šampona brez dodatka zgoščeval in kozmetično aktivne sestavine, formulacijo, kjer sta bila dodana amla in hidroksipropilmetilceluloza ter formulacijo, kjer so bili dodani amla, hidroksipropilmetilceluloza in ksantan. Glavni namen diplomske naloge je bil raziskati, ali bodo neizkušene prostovoljke zaznale razliko med izdelki glede na njihovo sestavo. Rezultate vrednotenja smo primerjali in ugotovili, da je testirankam bolj všeč krema, ki ima večji delež arganovega olja in dodano hialuronsko kislino, pri čemer so prostovoljke izpostavile, da se krema hitreje vpije in daje večjo mehkobo kože. Tudi pri šamponih so prostovoljke opazile razliko v sestavi med izdelki, pri čemer se je večina prostovoljk odločila za šampon, ki vsebuje hidroksipropilmetilcelulozo, ksantan in amlo, saj ustvari stabilno peno, hkrati pa omogoči hitro spiranje z rok. Prostovoljke so bile v večini zadovoljne z izdelki in so mnenja, da bi katerega od njih uporabljale tudi v svoji rutini nege kože rok in nege las.

• Language: Slovenian
• Keywords: Senzorično vrednotenje, krema za roke, šampon za lase, hedonski testi.
• Work type: Bachelor thesis/paper
• Organization: FFA - Faculty of Pharmacy
• Year: 2026
• PID: 20.500.12556/RUL-187304
• Publication date in RUL: 10.09.2026

Secondary language

• Language: English
• Title: Sensory evaluation of creams with hyaluronic acid and hair shampoos with amla (Emblica officinalis) extract

Abstract

Cosmetics represent a significant part of our everyday lives. Cosmetology plays a particular important role in skincare, where natural cosmetics and cosmetics from Asian countries are increasingly coming to the forefront. Given the wide range of products available on the market and the resulting intense competition among companies, they are striving to achieve consumer satisfaction, making sensory evaluation an important part of cosmetic product development. As part of the diploma thesis, sensory evaluation of hand creams and hair shampoos was conducted. The formulations of the products had previously been developed at the Chair of Pharmaceutical Technology, also for the purpose of a diploma thesis. The products were prepared in the laboratory, while their sensory evaluation was carried out in a home environment using the hedonic affective testing method. With the help of a questionnaire, 12 female volunteers aged between 20 and 50 evaluated their first impression of the products, their initial contact with the products, and their properties during and after application. Four different hand cream samples were included in the testing. The samples differed in the proportions of argan and avocado oils and in the incorporation of hyaluronic acid. As part of the evaluation of the hair shampoos, the volunteers assessed three different formulations: a basic shampoo formulation without added thickeners or a cosmetic active ingredient; a formulation containing amla and hydroxypropyl methylcellulose; and a formulation containing amla, hydroxypropyl methylcellulose, and xanthan gum. The main aim of the diploma thesis was to investigate whether inexperienced volunteers would perceive differences between the products based on their composition. The evaluation results were analysed and compared. The results showed that the participants preferred the cream containing a higher proportion of argan oil and added hyaluronic acid. The volunteers pointed out that this cream was absorbed more quickly and provided greater softness to the skin. Differences in the composition of the shampoos were also perceived. The majority of the volunteers preferred the shampoo containing hydroxypropyl methylcellulose, xanthan gum, and amla, as it produced a stable foam while also allowing for quick rinsing from the hands. Overall, the volunteers were satisfied with the products and indicated that they would incorporate some of them into their regular hand and hair care routines.

• Keywords: Sensory evaluation, hand cream, hair shampoo, hedonic tests.