Stage 1: A stage where the host wears the suit as normal attire and has access to low level affinity abilities from the suit in question. In this case: Poison. Poison doesn't run actively throughout the suit to prevent the host from hurting themselves. Rather It runs along a vein like tube across the arms and disperses through the hand. If the tube is cut it spreads onto the suit and may infect the host. So it works as a double edged sword.

Stage 2: This stage has the suit fully encase the host while slowly merging onto their body. While not a full on transformation, the material is more flexible in this form, and can be shifted more by the host if needed. Fabric that was once apart can come together. This is shown with the pair being able to make their legs more snake like. but if damaged enough the fabric will pull apart into more human one. Losing the slight merge with their host.

Stage # This stage happens when a host stays encased within stage 2 for a prolonged period of time. They begin to take on traits of their suit and as their body stays inside longer and longer.
This process works in reverse after being in stage 3.

(Something similar to TURN YOU a comic by Trunchbull)

Stage 3: A full on merge between suit and host. No fabric can be seen in this state. This syncs both suit and host into a singular being, also known as the Higher Self. This form takes on the personality of the most true part of yourself. Whatever emotions buried deep under surfaces in this form with no control. Be they gentle or anger filled. This can change depending how attune you are with your true nature and how well your suit knows your true feelings. This stage is impossible to reach without a STRONG proper connection between suit and host.

Whatever drawback that came during the first 2 stages no longer apply in this form.