Both experiences use a camera to scan the facial blood flow beneath the skin. They then use machine learning models to interpret the flow (colour changes over 30 sec period) and calculate dozens of wellness factors to provide insights into your wellness profile.

Yes. The both experiences are completely free and there is no obligation to purchase anything as a result of your scan.

The results are backed by large clinical studies where the technology was tested on tens of thousands of people and compared with hospital-grade equipment such as ECG heart monitors, blood pressure cuffs, and respiration belts. These studies show that the mirror’s measurements closely track these medical “gold standards,” but it’s still a wellness tool and not a replacement for professional medical testing or diagnosis.

The scan typically takes 30 seconds, and results are available immediately. You are then welcome to speak to our in-store team to delve into the detail further or if using our mobile experience, you can chat to Sol, our AI Wellness Assistant, to find out more.

No preparation is needed, but for best results, ensure your face is free of heavy makeup and glasses, you have good lighting and you hold still for the 30 second scan.

Our facial scan technology measures blood flow beneath the skin to create your personalised wellness report. While factors like lighting, skin tone, or makeup can influence the scan, race, ethnicity, or gender do not affect accuracy.

To ensure the best results, the software checks lighting quality using a Signal-to-Noise Ratio (SNR) and provides real-time feedback during the scan. It also calibrates the camera to optimise conditions for all skin tones.

From extensive testing, we know that darker skin tones may require slightly brighter lighting to achieve the same SNR as lighter skin tones. This helps the system deliver accurate and reliable wellness insights for everyone.

BMI is usually calculated based on weight and height, however, for the Solgar Smart Mirror we can calculate BMI from a facial scan by using smart technology that understands how facial features relate to overall body shape. First, the system maps the outline of your head and key points like your nose, ears, and forehead. Then, using these measurements, our machine learning models estimate your height and body proportions based on patterns learned from thousands of real examples. This allows us to make an accurate prediction of your BMI without needing a full-body scan, just from your face.

You’ll receive a personalised overview of preselected wellness indicators based on your facial scan that could be used to guide your nutritional recommendations. The indicators include Facial Skin Age, Physical Wellness, Cardiac Wellness and Current Stress Levels. You can see a full breakdown of each metric below:

Overall Wellness Score

Overall Wellness Score is a composite measure that equally weights your Physical Wellness Score, Cardiac Wellness Score, and Stress Level. The higher the Overall Wellness Score, the better, with 100% being the highest.

Facial Skin Age

This estimate can be used as an indicator for subject's facial skin aging. It may be influenced by many factors such as fatigue level, the use of skincare or cosmetics products.

Video images taken in poor lighting conditions (e.g., back-lighting, overhead lighting) may distort the estimation of subject's facial skin age.

Physical Wellness Score

Physical Wellness is an aggregate measure based on calculation of your Body Mass Index, Waist-to-Height Ratio, and Body Shape Index. The higher the Physical Wellness score, the better, with 5 being the highest.

Body Mass Index (BMI)

Body Mass Index is a measure of an individual's tissue mass (muscle, fat, and bone) adjusted for height. It is a commonly used indicator of overall body fat and serves as a tool for categorizing individuals as being underweight, normal weight, overweight, or obese on the basis of health risk.

Both experiences take indicators from the facial scan to determine your BMI. For the mobile experience, you are able to input your height and weight manually to calculate this if you would prefer. 

Body Mass Index is a fair predictor of cardiovascular diseases, Type 2 diabetes, gallstones, and certain cancers. It is the one of the best anthropometric predictors of high-density lipoprotein (HDL) and triglyceride levels; these are important factors for cardio-metabolic diseases. It is also one of the best anthropometric predictors of uric acid levels (high uric acid levels contribute to gallstones). A limitation of Body Mass Index is that it cannot distinguish between fat and muscle mass and thus can be inaccurate in muscular individuals.

A subject can calculate their Body Mass Index using the formula: weight in kg / (height in m)²

According to the World Health Organisation:

Body Mass Index Weight Status

Below 18.5 Underweight
18.5–24.9 Normal weight
25.0–29.9 Pre-obesity
30.0–34.9 Obesity Class I
35.0–39.9 Obesity Class II
40 or above Obesity Class III
For more information, see: Zhou, W., Wang, Y., Gu, X., Feng, Z. P., Lee, K., Peng, Y., & Barszczyk, A. (2020) Importance of general adiposity, visceral adiposity and vital signs in predicting blood biomarkers using machine learning. International Journal of Clinical Practice, e13664.

Waist-to-Height Ratio

Waist-to-Height ratio is an individual's waist circumference expressed as a percentage of their height. It is a particularly good predictor of cardiovascular disease risk. It is associated with cardiovascular disease risk factors like elevated total cholesterol and lower high-density lipoprotein (HDL).

For more information, see: Zhou, W., Wang, Y., Gu, X., Feng, Z. P., Lee, K., Peng, Y., & Barszczyk, A. (2020) Importance of general adiposity, visceral adiposity and vital signs in predicting blood biomarkers using machine learning. International Journal of Clinical Practice, e13664.

Body Shape Index

A low Body Shape Index corresponds to a ‘chilli pepper'-shaped body. As BSI increases, body shape resembles a pear, then a pineapple, and then an apple. A larger abdominal region suggests elevated levels of deep abdominal fat, which is associated with various health risks.

Body Shape Index is a particularly good predictor of mortality (from all causes), as well as a fair predictor of diabetes and cardiovascular diseases. It is associated with elevated triglyceride levels, which may partially contribute to the development of cardiovascular diseases.

For more information, see: Zhou, W., Wang, Y., Gu, X., Feng, Z. P., Lee, K., Peng, Y., & Barszczyk, A. (2020) Importance of general adiposity, visceral adiposity and vital signs in predicting blood biomarkers using machine learning. International Journal of Clinical Practice, e13664.

Cardiac Wellness

Cardiac Wellness is an aggregate measure based on calculation of your Heart Rate, Heart Rate Variability, and Blood Pressure. The higher the Cardiac Wellness score the better, with 5 being the highest.

Heart Rate

A normal resting pulse rate for adults ranges between 60 to 100 beats per minute (bpm), though athletes may have a lower rate, sometimes closer to 40 bpm. A rate below 60 bpm may indicate an issue, especially if accompanied by symptoms like fainting, dizziness, or shortness of breath. If your rate consistently exceeds 100 bpm, consult a medical professional.

Resting pulse rate can be influenced by various factors such as fitness level, age, cardiovascular disease, smoking, medications, and body position (standing, sitting, or lying down). For more information, refer to Mayo Clinic's and the American Heart Association's resources on heart rates.

Heart Rate Variability (HRV)

Heart Rate Variability refers to the variability in the timing between one heartbeat and the next. DeepAffex measures this with SDNN, which is the standard deviation of the interval between normal heartbeats (in milliseconds). A higher SDNN corresponds to more inter-beat variability.

Increased heart rate variability suggests an increase in parasympathetic activity and/or a decrease in sympathetic activity of the autonomic nervous system.

High resting heart rate variability is considered healthy and means that the heart is more flexible to the changing needs of the body.  The range is 1-80.

Blood Pressure

Systolic blood pressure is the peak pressure in subject's brachial arteries during the contraction of their heart muscle, measured in millimetres of mercury (mmHg).

According to the European Society of Cardiology and the European Society of Hypertension, high blood pressure (hypertension) is defined as the following:

Systolic Blood Pressure (mmHg)
Optimal < 120
Normal 120–129
High Normal 130–139
Hypertension ≥ 140

Diastolic blood pressure is the amount of pressure in subject's brachial arteries when their heart muscle is relaxed, measured in millimetres of mercury (mmHg).

According to the European Society of Cardiology and the European Society of Hypertension, high blood pressure (hypertension) is defined as the following:

Diastolic Blood Pressure (mmHg)
Optimal <80
Normal 80-84
High Normal 85-89
Hypertension ≥ 90

Mental Stress Index

Mental Stress Index (MSI) is a proprietary score based on heart rate variability that quantifies mental stress on a 5-point scale from relaxed (Level 1) to overloaded (Level 5). Variations in heart rate lead to fluctuations in the MSI, and it is normal for results to vary by as much as 1.0 with consecutive measurements.

Extremely Relaxed: Indicates deep relaxation and good mental health, though minimal stress may lower alertness for tasks.

Relaxed: A beneficial stress level for health, ideal for home or leisure but may still allow focus on difficult tasks.

Productive: A moderate stress level where optimal work is achieved, but it may require relaxation in certain situations.

Vigilant: Higher stress may improve short-term performance but can lead to mental or physical strain if sustained.

Overloaded: Significantly high stress impairs performance and requires immediate relaxation techniques to avoid health risks.

Results are indicative and are not a substitute for professional medical advice or treatment for specific medical conditions and it is not intended to diagnose, treat, cure, or prevent any disease. Always seek the advice of your GP or other qualified health care provider with any questions you may have regarding a medical condition.

Complete accuracy is limited by factors such as lighting conditions, skin tone variations, and the inherent limitations of non-invasive scanning technology.

Yes, your results may vary depending on your current physical composition. Lifestyle changes may lead to improved results over time.

No. The facial scan does not learn or adapt based on previous scans. Each scan is independent and the technology does not evolve with repeated use.

Yes, you can scan multiple times. Each scan is treated independently.

No. Results are indicative of wellness and are not a substitute for professional medical advice or treatment for specific medical conditions and it is not intended to diagnose, treat, cure, or prevent any disease. Always seek the advice of your GP or other qualified health care provider with any questions you may have regarding a medical condition.

How the facial scan measures certain metrics may differ to your Smart Device, so although our results endeavour to be as accurate as possible, you will likely always see some disparity. The Solgar Smart Mirror and mobile experience don’t measure your body in the same way as a smart watch, so their numbers won’t always match exactly. The mirror uses a camera to analyse blood flow in your face and has been validated in clinical studies against hospital-grade equipment like ECG heart monitors and blood pressure devices, while your watch uses its own wrist sensor and algorithms, which can be affected by movement, strap fit, and positioning. Small differences are normal, what matters most is tracking trends over time on the same device.

No. Your results are unique to you and are not stored or shared.

No, your data is not stored. The Solgar Smart Mirror and mobile experience both scan your face to provide personalised wellness insights, but it does not save your image or personal information. Once your results are displayed, they are automatically deleted when the wellness report is closed. Your privacy is fully respected throughout the experience.

No, both experiences scan your face but do not take or store any photographs/videos.

Yes, but only to calculate your wellness factors and to deliver your results securely. Your data is not stored or shared.

For the Solgar Smart Mirror experience, you can view your results on-screen or use the QR code to access your results privately, if you prefer. For the mobile experience, your wellness report will be provided as a link which you can access online. Both expire and the data will be deleted to ensure your privacy, but you are welcome to take the facial scan again to see if your results change over time.

Yes, the technology is designed to work across a wide range of skin tones and types, though results may vary slightly due to individual differences.

Yes. The scan is not invasive and does not cause you any harm.

Although there are no safety issues with the facial scan, it is designed for adult use only.

Yes, for the Solgar Smart Mirror experience our in-store team is available to help interpret your results and recommend relevant Solgar products or wellness tips. For the mobile experience, Sol, our AI Wellness Assistant is on hand for any questions you may have.

If you have any concerns about the details within your wellness report, please contact your healthcare provider or doctor. The facial scan is only a wellness tool and not a replacement for professional medical testing or diagnosis.

Both were developed through a collaboration between Nestlé Health Science and Nuralogix, as part of our commitment to innovation and supporting your wellness journey. (Nuralogix provides the facial scanning and data interpretation technology.)

Nestlé Health Science is the official owner of the Solgar Smart Mirror device.

No. The Solgar Smart Mirror device was manufactured in China based on the specifications of the Canadian Company Nuralogix and configured in accordance with UK regulations.

No. Smart Mirrors and mobile wellness tools are available globally, helping customers like you on their wellness journeys.