Both hard wax and soft wax can be used for eyebrow waxing, but many estheticians prefer to use hard wax for this delicate area. Hard wax is less likely to stick to the skin and is gentler on the delicate skin around the eyebrows. Additionally, hard wax allows for more precise application and removal, which is important when shaping and defining the eyebrows. Soft wax may be more suitable for larger areas of the face or body where the skin is less delicate. Ultimately, the choice between hard wax and soft wax will depend on the preference and experience of the esthetician or individual performing the waxing.