Both oils can be used together in your skincare routine but avoid layering them over the top of one another. Instead, stick to using them on alternate consecutive evenings. E.g use Rosehip Bioregenerate Monday-Wednesday and Viper's Gloss on the remaining nights.
Alternatively, use the Rosehip Bioregenerate at night and combine Viper's Gloss with your moisturiser in the morning.
The difference between the oils is explained in our blog: Rosehip Bioregenerate Oil vs. Age Confidence Facial Oil.