The secret to having followers keep coming back to you is to mix up your posts.
Think about a brand that you follow, say on Instagram or Facebook. What do their post look like? Are they strictly pushing their products/services every single time? No.
People want to know about what they offer, but they don't want to feel like they're being sold something every single time. The key here is to humanize your posts.
Be authentic. Use your voice. This is the best strategy for attracting your ideal client. So while you may be promoting your upcoming launch, throw in some behind the scenes posts, maybe some tips. Become a source of information.