Colourstart vs Do Health

By carefully answering a simple set of questions, Colourstart Passport can help you decide if Colourstart is suitable for you to use. Your answers may also help you make an informed decision on whether you should avoid hair colour. Colourstart Passport stores the answers to your questions and also any pictures you have taken of your test result. This can be helpful to share with your hairdresser, beauty therapist or barber for future reference to avoid potentially unnecessary retesting. Colourstart Passport can be shared with any participating hair professional.

Do Health is the personal health companion, powered by your biology and lifestyle. We help you understand what your body actually needs, then give you the most important next step to feel better. No guesswork, no overwhelm. Just do what’s right for you. How it works Understand – A simple blood test shows what your body actually needs. We measure 11 core biomarkers across energy, circulation and inflammation. Recommend – We identify the changes with the biggest positive impact on how you feel right now. Not everything. Just what matters for your body. Do – Get your personalised weekly action plan, based on Dr Chatterjee's four pillars: Eat, Move, Relax, Sleep. What's included - 1 full health screen with 50+ biomarkers - 3 blood tests per year - 11 core biomarkers, clinically interpreted - Your biological age – and how to improve it - Personalised weekly action plans - A companion that learns what works for you What makes Do Health different Most health apps give you data and leave you to figure it out. Do Health tells you exactly what to do next – small, doable actions that fit around your real life. When life gets messy, your plan flexes with you. No guilt, no shame, no starting over. What to expect Each week, you'll get three actions personalised to your body and lifestyle. Track your biomarkers over time. Watch your biological age change. Learn what actually works for you. Built on 20 years of clinical practice Dr Rangan Chatterjee's four-pillar framework has helped thousands of people feel better through small, consistent changes. Do Health makes it personal to you. Stop guessing how to improve your health. Start doing.