Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that Cosmetics maintains its standards for the high quality of its published papers. Thanks to the cooperation of our reviewers, in 2020, the median time to first decision was 13 days and the median time to publication was 34.5 days. The editors would like to express their sincere gratitude to the following reviewers for their precious time and dedication, regardless of whether the papers were finally published:
| Amaral, Helena | Lawrence, Karl |
| Annunziata, Giuseppe | Leclercq, Loïc |
| Araujo, Andre | Lee, Young-Chul |
| Aspatwar, Ashok | Lemfack, Marie Chantal |
| Baki, Gabriella | Leon, Lorraine |
| Baran, Anna | Lephart, Edwin D. |
| Barba, Francisco J. | Lionetti, Nicola |
| Barrajon, Enrique | Liu, Chao-Lin |
| Bartosz, Grzegorz | Lodén, Marie |
| Baswan, Sudhir | Loglio, Giuseppe |
| Bellei, Barbara | Man, Adrian |
| Berardesca, Enzo | Marino, Angela |
| Bertolini, Marta | Marinova, Krastanka |
| Bertrand, Martine | Masters, Eliot |
| Bogdan, Catalina | Mazumder, Kishor |
| Bojanowski, K. | Menaa, Farid |
| Bollini, Flavia | Montenegro, Lucia |
| Boyer, Justin G. | Montesinos, M. Carmen |
| Buha, Aleksandra | Morici, Lisa |
| Burcul, Franko | Narra, Hema Prasad |
| Callan, Bridgeen | Nitulescu, Georgiana |
| Calvo-Lobo, César | Nunes, Fernando |
| Cantero, Domingo | O’Neill, A. M. |
| Caruntu, Constantin | Oancea, Florin |
| Centini, Marisanna | Oliveira, Andreia |
| Chandrasekaran, Murugesan | Park, Kyoung-Chan |
| Coiffard, Laurence J. M. | Picca, Anna |
| Conti, Heather | Pilmane, Māra |
| Curcic, Marijana | Pratsinis, Harris |
| D’auria, Enza | Proksch, Ehrhardt |
| Da Rosa, Marcelo | Proverbio, Edoardo |
| De Melo Bonini, Luci Mendes | Raeeszadeh-Sarmazdeh, Maryam |
| Del Pozo Bayón, Maria A. | Ramanauskienė, Kristina |
| Dong, Qiuchen | Rasmussen, Kirsten |
| Ersilia, Alexa | Reich, Adam |
| Esposito, Elisabetta | Renò, Filippo |
| Filip, Adriana | Ribeiro, Artur |
| Fung, Ernest S. | Rodrigues, Francisca |
| Gaweł-Bęben, Katarzyna | Rodríguez Villanueva, Javier |
| Gimenez-Arnau, Elena | Rosa, Gonçalo P. |
| Gonda, Sándor | Rosado, Catarina |
| Graf, Christina | Ross, Christina L. |
| Gubitosa, Jennifer | Rundo, Leonardo |
| Guerranti, Cristiana | Sawa, Teiji |
| Gupta, Kajal | Seijas Vázquez, Julio A. |
| Guzmán, Eduardo | Semenzato, Alessandra |
| Gwiazdowska, Daniela | Shim, Kyu-Sik |
| Han, Jaehong | Sikora, Elżbieta |
| Hano, Christophe | Slominski, Andrzej |
| Holefors, Anna | Sowa, Ireneusz |
| Itou, Takashi | Steel, Christina |
| Iwashina, Tsukasa | Storti, Giuseppe |
| Jabłońska-Trypuć, Agata | Strekowski, Lucjan |
| Jaromin, Anna | Sugumaran, Manickam |
| Juncan, Anca Maria | Svecnjak, Lidija |
| Kageyama, Hakuto | Takemori, Hiroshi |
| Kamolz, Lars-Peter | Tassoni, Annalisa |
| Kim, Hyun Jung | Tayebati, Seyed Khosrow |
| Kim, Ki Hyun | Tromelin, Anne |
| Kim, Ki-Taek | Tungmunnithum, Duangjai |
| Kim, Kyu-Bong | Valacchi, Giuseppe |
| Kishimoto, Jiro | Varvaresou, Athanasia |
| Klimaszewska, Emilia | Vassallo, Antonio |
| Koike, Kenzo | Villa, Carla |
| Kojima, Hajime | Wei, Kai-Che |
| Koreivienė, Judita | Weighardt, Heike |
| Kottner, Jan | Wińska, Katarzyna |
| Kung, Chin-Ping | Yang, Chao-Hsun |
| Labrou, Nikolaos | Yarosh, Daniel B. |
| Lagouri, Vasiliki | Zastrow, Leonhard |
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