An amateur hypnotist faces charges of 'indecent liberties' after allegedly having sex with a woman after he hypnotized her.

Kevin Christian Geyer, 25, pleaded not guilty to the charges in Benton County Superior Court, Washington on Wednesday (8 October).

The victim, who has not been identified, visited Geyer's home in Kennewick on several occasions to help address her personal problems using hypnotherapy.

The court heard that, during a visit on June 4, Geyer allegedly put the woman in a state of hypnosis and told her to block out all of her senses except her hearing.

When he woke her from her hypnotic state, she was fully clothed.

She told authorities that she later had memories of Geyer sexually assaulting her and found physically evidence of the assault on her clothes.

According to police reports the victim texted Geyer to confront him about the alleged assault after which she claims he apologized for the attack.

When authorities contacted Geyer regarding the alleged assault, he also admitted to touching her and again expressed his remorse.

The charge of indecent liberties stems from him an individual allegedly having sexual contact with a person who is incapable of consent because they are mentally incapacitated or physically helpless.

Geyer has been released from police custody, but has been ordered to have no contact with the woman for a year.

The trial will begin in January.