When too little initiator is used, what risk may occur?

• A. It may weaken the enhancement or cause an allergic reaction.
• B. It speeds up curing.
• C. It improves color retention.
• D. It has no effect.

Answer: (A)

When the amount of initiator is too low, the polymerization reaction doesn’t get fully started or complete. That means the resin network doesn’t form as strongly as it should, so the enhancement is weaker and more prone to lifting, bending, or breaking. At the same time, incomplete curing leaves residual monomer behind, which can irritate or sensitize the skin and increase the risk of an allergic reaction. So, the main risk is a weaker, less durable enhancement combined with potential sensitivity from unreacted material. The other options don’t fit because under-initiating doesn’t speed curing or improve color retention, and it does have a noticeable effect on curing quality.