Sécra Shoes are great for people with bunions and will be a far better option for you than wearing flat shoes which offer no support.
Once bunions have developed, you cannot change this, except with surgery. So nothing will change the fact that someone already has bunions, however, there are certainly things that can make them progressively worsen and these factors are often the things that you can change. There are many different causes of bunions, hereditary factors being a substantial one that you cannot change, however, one factor that you can change is wearing footwear with no arch support.
In flat footwear with no arch support, if you are predisposed to rolling in at the feet (pronating), then this squashes the big toe inwards every time your foot contacts the ground. Over time, this repetitive rolling in of the feet and subsequent squashing in of the big toe can lead to bunions.
While we cannot change the bunion that is present, reducing the rolling in of the foot through the arch support will help take stress off the big toe which will help prevent it from worsening and may also provide some pain relief if pain is present.
It's also worth noting that Sécra Shoes footbeds are made from a comfortable and specialised foam material that are generally thicker and softer than normal ladies shoes which is great for reducing stress and strain on the big toe, giving the big toe a softer more comfortable environment to function which may provide some pain relief if the bunions are painful.
So in summary, we cannot change the bunions that are present, but if poor foot biomechanics are contributing to the issue, we can dramatically reduce or stop their progression by wearing the right footwear!