Znanstvena istraživanja i ispitivanja aktivne sirovine Ichthyol (Sodium Shale Oil Sulfonate) o dokazanom djelovanju i učinkovitom smanjenju simptoma prhuti, crvenila, nadraženosti na koži i vlasištu.

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2. Warnecke J., Wendt A. Anti-inflammatory action of pale sulfonated shale oil (Ichthyol Pale) in UVB erythema test. Inflamm. Res. 47, 1998, 75-78.

3. Kownatzki, E., Uhrich, S., Schöpf, E., The Effect of a Sulfonated Shale Oil Extract (Ichthyol) on the Migration of Human Neutrophilic Granulocytes in vitro. Arch. Dermatol. Res. 276: 235 - 239, 1984.

4. Gayko, G., Warnecke, J., Volger, C., Zelenkova, H., Antidandruff Efficacy of Sodium Shale Oil Sulfonate Versus Coal Tar, Cosmetics & Toiletries 120 (3), 83 – 92, 2005.

5. Gayko G., Warnecke J., Zelenkova H., The use of the pale type of Ichthyol in cosmetic dermatology. Cosmetic, single-centre, controlled and randomized double blind study for proof of efficacy and tolerance of a combination of Ichthyol Pale 0.5% and synthetic antifungal raw material 0.5% vs 1.0% shampoo in the treatment of moderate to severe dandruff. Clinical dermatology 8 (4):243-247, 2006.

6. Gayko, G., Dealing with dandruff needs integrated approach. Personal Care Magazine, May 2009.

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8. Rabe K.F., Perkins R.S., Dent G., Gustmann H., Barnes P.J. Inhibitory Effects of Sulfonated Shale Oil Fractions on the Oxidative Burst and Ca++ Mobilization in Stimulated Macrophages. Arzneim. Forsch./Drug. Res. 44 (I), 2, 166-170, 1994.

9. Gloor M., Dressel M, Schnyder U.W. The Effect of Coal Tar Distillate, Ichthyol Sodium and Omadine MDS on the Epidermis of the Guinea Pig. Dermatologica 156: 238-243, 1978.

10. Gayko, G.: Sulfonate d'huile de schiste sodique contre les pellicules – Sodium Shale Oil Sulfonate against dandruff, Parfums Cosmétiques Actualités, No.170, Avril/mai 2003.

11. Reinhard, S. and Warnecke, J., Helles sulfoniertes Schieferöl zur lokalen Behandlung der Acne vulgaris, Der Allgemeinarzt 17, (1995) 182 (engl. translation available).