Final answer:
To remove bulk with thinning shears without creating unwanted short layers or a spiky appearance, cut the hair at least 2 inches from the scalp after combing out the subsection.
Step-by-step explanation:
When using thinning shears to remove bulk, it is recommended that you comb the subsection out from the head and cut it with the thinning shears at least 2 inches from the scalp. This technique ensures that you do not cut too close to the scalp, which could result in creating unwanted short layers or causing hair to stick up. By keeping the shears at least this distance away, you allow for a more natural blend and reduce the risk of noticeable thinning or cutting lines.