There was some kind of uproar when people found out some products contain guaiacol, so he clarified which one. DHT was not included. Might be a typical solvent but I dont want to put that in my body.
Guaiacol, potential concerns:
The use of guaiacol is controversial as it can cause skin irritation, allergic reactions and tissue damage in some users. It is also an irritant that can cause burning or pain when injected. Long-term safety and tolerability are sometimes questioned and in some countries its use in pharmaceutical preparations is more strictly controlled or not approved at all.