Efficacy Study of Cosmetic Product Against Telogen Effluvium on Women

Telogen effluvium (TE) is one of the most common causes of non-scarring diffuse hair loss, defined as global diminution of hair with no formation of areas completely bald. Premature termination of anagen into catagen and telogen hair follicle is the main mechanism observed in TE. It results in increased, synchronized telogen shedding leading to a decrease in global hair density. Acute telogen effluvium (ATE) has an abrupt onset and generalized scalp hair loss occurring 2-3 months after a triggering event, which could be unidentifiable in up to 33% cases. The degree of effluvium depends on the severity, duration of exposure and the type of agent, that can be: emotional stress, hormonal changes in the postpartum period, high fever, surgery, surgical/accidental trauma, severe haemorrhage, chronic systemic illness, or immense psychological stress, changes in medication or crash-diets. A summer effect possibly ultraviolet (UV) light induced, manifesting itself in autumn can cause ATE. The incidence of TE is not known, although it is likely that most women will experience at least 1 episode of TE during a lifetime. ATE can be diagnosed based on relevant medical and personal history and examination subjective complaints, clinical and physical exams or relevant investigations (hair pull test, phototrichogram, blood test…). ATE generates a lot of anxiety in the patient: significant impact on quality of life, self-esteem impairment, and stress increase. Thus, stress may act as a primary inducer; an aggravating factor or be a response to hair loss. ATE usually remits within few months (3-4 to 6 months) in 95% of cases if the trigger is removed or treated. Complete recovery may take until 1 year. A resolving TE is characterized by the absence of hair shedding, a negative hair pull test and synchronized hair growth. In this study, our aim is to assess the effects of the RV3466F lotion on hair growth, compared to a control group, with clinical and biometrological non- invas