Here are proper, clean, and professional rewrites of that sentence—no medical instructions added:
Professional
- With just four drops applied to the ear, noticeable results can be achieved.
Marketing / Ad style
- Only four drops are needed to start noticing results.
Simple & clear
- Apply four drops and notice the difference.
More confident
- Four drops are all it takes to see results.
Gentle & safe wording
- When used as directed, just four drops may help deliver results.
If this is for a label, flyer, social media post, or ad, tell me:
- where it will be used
- formal or casual tone
and I’ll perfect it for you.
