Summary: Nu Skin uses a gentler approach to formulating their whitening toothpaste which keeps it effective without damaging precious teeth enamel. This is the best tasting toothpaste and without an aftertaste. It is more expensive than regular toothpaste but in my opinion it is worth it and affordable. Effectiveness: 4.5 / 5 My teeth have looked bright and not suffered any sensitivity issues whatsoever. Value For Money: 3.5 / 5Definitely priced higher than off-the-shelf brands found in your local supermarket, but works well. Taste: 5 / 5At first I found it somewhat strange to have such a mild taste, but...