Would I be a good candidate for a donut lift? downsizing from 525cc to 400cc

It’s completely understandable to want to downsize your implants—especially if you're feeling top-heavy despite being fit and active. Reducing from 525cc to 400cc is a noticeable change, and whether a lift is needed will depend on your current breast tissue, skin elasticity, and overall shape.
A periareolar mastopexy (a lift performed around the edge of the areola) is often preferred by patients who wish to minimize visible scarring. This technique can be effective in cases of mild ptosis, particularly when only a subtle repositioning of the nipple-areola complex is needed.
However, it’s important to note that periareolar lifts have limited lifting capacity. If your skin has stretched over time due to the size and weight of your implants, or if there’s moderate sagging, a more comprehensive lift technique may be required to achieve a naturally youthful shape after downsizing.
Your desire to avoid additional scarring is valid, and many surgeons will first assess whether a periareolar approach can provide sufficient improvement while respecting your aesthetic priorities.
I hope this gives you a clearer idea of what to expect. A consultation with a board-certified plastic surgeon experienced in implant revision and lift techniques will be the best next step to tailor the plan to your goals.
— Güray Yeşiladalı, MD

Thank you for your question. Significant size increases, from 325cc to 525cc, will have stretched your skin. Downsizing to 400cc is reasonable, but whether it will cause sagging and need a lift depends on two key factors: nipple position relative to your inframammary fold and tissue laxity and implant footprint. If your nipples are at or above the fold and your skin has maintained decent elasticity, you may not need a lift. If your nipples sit below the fold, a donut lift likely won’t be sufficient. In that case, a more extensive lift (vertical or anchor) may be required to restore a youthful breast shape. It's best to have an in-person consultation with a board-certified plastic surgeon who can assess nipple position, skin tone, and breast volume in detail.

According to your pictures, I can say that your request is achievable. If you’re skin quality is good, seem like the donut lift will do the job. But please don’t forget that for exact decision we should examine you in person. Better be prepared for a slight change of vertical scar.