Edit Brief Summary: To evaluate the NaP lotion effect to decrease dandruff scoring and microbiome rebalance.
Detailed Description: Dandruff is a common scalp disorder affecting almost half of the population of any gender and ethnicity. Skin microflora, in particular Malassezia genus, plays a key etiological role which was demonstrated in many studies.
Malassezia restricta was found as the major fungal species present on the scalps with or without dandruff; while the two main bacterial species found on the scalp surface were Propionibacterium acnes and Staphylococcus epidermidis. Dandruff seems correlated with a higher incidence of Malassezia restricta and Staphylococcus epidermidis and a lower incidence of Cutibacterium acnes.
Also, the link between dandruff and a higher level of scalp surface lipoperoxidation has been recently described. In fact, dandruff scalp surface is also characterized by higher amounts of squalene monohydroperoxide (SQOOH) and malondialdehyde. MDA is a late biomarker derived from sebaceous unsaturated free fatty acids. Some bibliographic elements suggest that these lipid biomarkers could trigger dandruff.
The main objective of that clinical study is to study the effect on dandruff of a leave-on formulation of anti-fungus NaP associated with anti-oxidant VitCG versus vehicle and versus reference leave-on anti-fungus alone Octopirox, all associated with a neutral shampoo.
Who can participate
Age range18 Years – 60 Years
SexALL
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Inclusion criteria
✓. Healthy male or female volunteer;
✓. from 18 to 60 years old;
✓. Skin Phototype (Fitzpatrick): I to IV;
✓. Subject with hair length \> 2 cm, and preferentially shorter than shoulder length;
✓. Female of childbearing potential, who is not sexually active, or using an effective contraceptive method\* for at least one month before the beginning of the study, and throughout the study or menopausal woman (with absence of menstruations for less than one year) or post-menopausal woman (with absence of menstruations for more than one year);
✓. Subject exhibiting moderate to severe dandruff status of scalp at screening, pre-inclusion and inclusion visit;
✓. Subject having at inclusion visit Day 0:
✓. total dandruff score (adherent + non-adherent) \> or = 4.5 (ranging from 0 to 10);
Exclusion criteria
✕. Healthy male or female volunteer;
What they're measuring
1
Global score of dandruff status of the scalp: evaluation of adherent and non-adherent dandruff according
✕. Subject with hair length \> 2 cm, and preferentially shorter than shoulder length;
✕. Female of childbearing potential, who is not sexually active, or using an effective contraceptive method\* for at least one month before the beginning of the study, and throughout the study or menopausal woman (with absence of menstruations for less than one year) or post-menopausal woman (with absence of menstruations for more than one year);
✕. Subject exhibiting moderate to severe dandruff status of scalp at screening, pre-inclusion and inclusion visit;
✕. Subject having at inclusion visit Day 0:
✕. total dandruff score (adherent + non-adherent) \> or = 4.5 (ranging from 0 to 10);