Spectral RS® is an exceptionally safe treatment as it does not contain any chemical compounds that can induce an adverse reaction.
However, due to the use of nanosomes as a carrier agent users should exercise caution when combining Spectral RS® with minoxidil or other topical hair loss treatments. Since nanosomes greatly enhance absorption, they will also amplify absorption of other substances increasing the chance of side effects.

If you experience rapid heart beat, dizziness, shortness of breath, or other adverse effects then you should never combine Spectral RS® with other topical treatment.