Stress Relief Properties of a Cosmetic Routine

Study Overview
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Brief Summary
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Everyday life psychosocial challenges may negatively impact health and well-being, contributing to the onset and/or progression of psychological and psychosomatic disorders. Pharmacological treatments can moderate our stress response, but they usually bring about addiction/tolerance and a number of other side effects. Therefore, it is relevant to identify alternative stress relief strategies that are devoid of these unwanted drawbacks. Moreover, the effects of such alternative interventions should be objectively quantified by means of reliable psychobiological parameters. The goal of this study was to quantify the acute and persistent effects of a cosmetic routine based on the self-administration of a cream enriched with essential oils, namely Juniperus Phoenicea gum extract, Copaifera Officinalis resin, Aniba Rosodora wood oil, and Juniperus Virginiana. This aim was achieved by measuring the (re-)activity of the autonomic nervous system (via heart variability indexes) and the hypothalamic-pituitary-adrenocortical axis (via salivary cortisol levels), as well as through psychometric and behavioral assessments. Participants' informed consent signature for adhesion at the study was initially requested. With their acceptance, parameters were recorded anonimously, identified by their initials and an alphanumeric code. Data were transferred on Excel worksheets, utilized for descriptive analysis related at every variable. All statistical analyses were performed using SPSS 25 software package and statistical significance was set at p<0.05.

Detailed Description
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Everyday life psychosocial challenges may negatively impact health and well-being, contributing to the onset and/or progression of psychological and psychosomatic disorders. Pharmacological treatments can moderate our stress response, but they usually bring about addiction/tolerance and a number of other side effects. Therefore, it is relevant to identify alternative stress relief strategies that are devoid of these unwanted drawbacks. Moreover, the effects of such alternative interventions should be objectively quantified by means of reliable psychobiological parameters. The goal of this study was to quantify the acute and persistent effects of a cosmetic routine based on the self-administration of a cream (DAVC) enriched with essential oils, namely Juniperus Phoenicea gum extract, Copaifera Officinalis resin, Aniba Rosodora wood oil, Juniperus Virginiana. This aim was achieved by measuring the (re-)activity of the autonomic nervous system (via heart variability indexes) and the hypothalamic-pituitary-adrenocortical axis (via salivary cortisol levels), as well as through psychometric and behavioral assessments. Fourty women, 25-50 years old, were instructed for a correct mode of self administration of the cream. On day 0, women came to the lab and were instrumented for electrocardiographic signal (ECG) recordings. Initially, a 10-min ECG was collected in resting conditions (baseline). Then, two 20-min ECGs were recorded, each following the self-administration (3-min duration) of the DAVC and a placebo cream (PLAC), in a randomized order. At the end of the baseline and the two post-cream administration recordings, saliva samples were collected. From day 1 to 28, subjects self-administered (at home, twice a day, at wake-up and bed time) either DAVC (n=20) or PLAC (n=20). On day 29, they returned to the lab and ECGs and underwent a stress test (Trier Social Stress Test, TSST). The test lasted 10 min and consisted in a stress interview (5 min), immediately followed by an arithmetic task. ECGs were collected in baseline (10 min), test (10 min), and recovery (20 min) phases. Saliva samples were collected at the end of the baseline and the middle and the end of the recovery phase. The subjects filled a number of psychological questionnaires, including Profile of Mood States (POMS, on day 0 and 29) and STAI-Y1 (on day 29). In addition, subjects were videorecorded during the TSST, in order to quantify their non verbal behavior patterns (via ECSI). A single, self-administration of DAVC (day 0) produced a significant, acute potentiation of parasympathetic neural modulation (HF index: 25% increase as to baseline), whereas PLAC produced only a modest change (3% increase). DAVC provoked a modest (10%), non significant reduction of cortisol levels, which was similar to that induced by PLAC. Prolonged DAVC self-administration (4 weeks) produced: (i) a significant inhibition of stress-induced cortisol elevation on day 29 (55% increase as compared to pre-stress value in DAVC group, 75% in PLAC group); (ii) a significant improvement of mood profile (POMS test) on day 29 compared to day 0; (iii) a reduction of perceived anxiety (STAI-Y1 score) at the end of the TSST; (iv) significantly lower scores of behavioral patterns linked to anxiety, motivational conflict and avoidance and higher scores of affiliation during the TSST, as compared to PLAC group. These autonomic neural, neuroendocrine and psychological data suggest that a cream enriched with essential oils has both acute and long-term stress-reduction effects on human psychophysiology. Acute effects involve a potentiation of the parasympathetic component of autonomic neural regulation, which is usually associated with well-being, relaxation and resilience. The long-term effects point to a generalized stress-relief property, involving both the hormonal and psychological sides of stress adaptation.

Official Title
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Stress Relief Properties of a Cosmetic Routine: Psychobiological Evidence

Conditions
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Stress Physiology, Stress, Psychological

Intervention / Treatment
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* Biological: Cream


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: female gender 25 to 50 years old Exclusion Criteria: current or past neurological, psychiatric, and cardiac disorders cognitive impairment substance or alcohol abuse or dependence recent (last 12 months) traumatic events such as a death in the family, serious accident, job firing or divorce caregiving (last 12 months) a family member with serious pathology or disability current psychotropic or contraceptive drug use

Ages Eligible for Study
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Minimum Age: 25 Years
Maximum Age: 50 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Enriched Cream<br>The enriched cream is self-administered and contains a blend of 4 essential oils, namely Juniperus phoenicea gum extract, Copaifera officinalis resin, Aniba rosaeodora wood oil and Juniperus virginiana oil. | Biological: Cream<br>* The enriched cream is self-administered and contains a blend of 4 essential oils, namely Juniperus phoenicea gum extract, Copaifera officinalis resin, Aniba rosaeodora wood oil and Juniperus virginiana oil. The placebo cream is devoid of the essential oils<br>|
| Active Comparator: Placebo Cream<br>Cream devoid of essential oils, self-administered | Biological: Cream<br>* The enriched cream is self-administered and contains a blend of 4 essential oils, namely Juniperus phoenicea gum extract, Copaifera officinalis resin, Aniba rosaeodora wood oil and Juniperus virginiana oil. The placebo cream is devoid of the essential oils<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Acute autonomic stress responsivity (heart rate, HR) to cream self-administration | Mean HR, measured as bpm (beats per minute) | ECG recorded just before (for 10 minutes) the self-administration of the enriched and placebo creams (day 0) | 
| Acute autonomic stress responsivity (heart rate, HR) to cream self-administration | Mean HR, measured as bpm (beats per minute) | ECG recorded just after (for 20 minutes) the self-administration of the enriched and placebo creams (day 0) | 
| Acute autonomic stress responsivity (HF, vagal input to the heart) to cream self-administration | High frequency component power (HF) of the RR interval spectrum (n.u.) | ECG recorded just before (for 10 minutes) the self-administration of the enriched and placebo creams (day 0) | 
| Acute autonomic stress responsivity (HF, vagal input to the heart) to cream self-administration | High frequency component power (HF) of the RR interval spectrum (n.u.) | ECG recorded just after (for 20 minutes) the self-administration of the enriched and placebo creams (day 0) | 
| Acute HPA axis stress responsivity to cream self-administration | Determined by means of salivary cortisol levels (pg/ml) | Samples obtained just before the self-administration of the enriched and placebo creams | 
| Acute HPA axis stress responsivity to cream self-administration | Determined by means of salivary cortisol levels (pg/ml) | Samples obtained after (20 min) the self-administration of the enriched and placebo creams | 
| Acute HPA axis stress responsivity to the psychosocial stress test | Determined by means of salivary cortisol levels | Samples obtained just before the psychosocial stress test | 
| Acute HPA axis stress responsivity to the psychosocial stress test | Determined by means of salivary cortisol levels | Samples obtained after (10 minutes) the psychosocial stress test | 
| Acute HPA axis stress responsivity to the psychosocial stress test | Determined by means of salivary cortisol levels | Samples obtained after (30 minutes) the psychosocial stress test | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Perceived stress | Determined via the Perceived Stress Scale (PSS) questionnaire. It is a measure of the degree to which situations in one's life are appraised as stressful. Items are designed to tap how unpredictable, uncontrollable, and overloaded respondents find their lives. The 10 questions that compose this test are related to feelings and thoughts experienced during the last month. In each case, respondents are asked how often they felt a certain way. For each question, they had to choose from the following alternatives: 0=never, 1=almost never, 2=sometimes, 3=fairly often, 4=very often. The PSS score was determined by following these directions: First, the scores for questions 4, 5, 7, and 8 were reversed. On these 4 questions, the scores were changed like this: 0 = 4, 1 = 3, 2 = 2, 3 = 1, 4 = 0. Then scores were added up for each item to get a total. Individual scores on the PSS can range from 0 to 40 with higher scores indicating higher perceived stress. | Before (day -2) the 4-week time period (day 0 to 28) during which subjects self-administered twice daily (at wake up time and bed time) the cream | 
| Perceived stress | Determined via the Perceived Stress Scale (PSS) questionnaire. It is a measure of the degree to which situations in one's life are appraised as stressful. Items are designed to tap how unpredictable, uncontrollable, and overloaded respondents find their lives. The 10 questions that compose this test are related to feelings and thoughts experienced during the last month. In each case, respondents are asked how often they felt a certain way. For each question, they had to choose from the following alternatives: 0=never, 1=almost never, 2=sometimes, 3=fairly often, 4=very often. The PSS score was determined by following these directions: First, the scores for questions 4, 5, 7, and 8 were reversed. On these 4 questions, the scores were changed like this: 0 = 4, 1 = 3, 2 = 2, 3 = 1, 4 = 0. Then scores were added up for each item to get a total. Individual scores on the PSS can range from 0 to 40 with higher scores indicating higher perceived stress. | After (day 29) the 4-week time period (day 0 to 28) during which subjects self-administered twice daily (at wake up time and bed time) the cream | 
| Profile of mood states | Determined via the Profile of Mood States (POMS) questionnaire. It is a rating scale that measures 6 distinct mood states, namely tension-anxiety (TA), depression-dejection (DD), anger-hostility (AH), fatigue-inertia (FI), confusion-bewilderment (CB), and vigor-activity (VA). Subjects are asked to report the intensity of these six different dimensions of mood as they felt them during the last week. Subjects self report on each of these areas using a 5-point Likert scale (0=not at all, 1=a little, 2=moderately, 3=quite a lot, 4=extremely). An overall score of mood profile (POMS score) can be drawn by summing the scores obtained in each of the five negative factors and subtracting the single positive factor (VA). | Before (day -2) the 4-week time period (day 0 to 28) during which subjects self-administered twice daily (at wake up time and bed time) the cream | 
| Profile of mood states | Determined via the Profile of Mood States (POMS) questionnaire. It is a rating scale that measures 6 distinct mood states, namely tension-anxiety (TA), depression-dejection (DD), anger-hostility (AH), fatigue-inertia (FI), confusion-bewilderment (CB), and vigor-activity (VA). Subjects are asked to report the intensity of these six different dimensions of mood as they felt them during the last week. Subjects self report on each of these areas using a 5-point Likert scale (0=not at all, 1=a little, 2=moderately, 3=quite a lot, 4=extremely). An overall score of mood profile (POMS score) can be drawn by summing the scores obtained in each of the five negative factors and subtracting the single positive factor (VA). | After (day 29) the 4-week time period (day 0 to 28) during which subjects self-administered twice daily (at wake up time and bed time) the cream | 
| Behavioral coping style | Determined via the quantification of 37 different patterns of non-verbal behavior. The recording session (10-min psychosocial stress) was divided into successive 15-second sample intervals. The instant of time at the end of each sample interval, referred to as the sample point, was identified by a beeper. On the instant of each sample point, the observer recorded whether or not the behavior pattern had occurred during the preceding sample interval. The score of each behavior for each subject was expressed as the proportion of all sample intervals during which that behavior occurred. | During the psychosocial stress test (PST, day 29) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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autonomic nervous system, HPA axis, anxiety, non verbal behavior