I reuse my 10 and 15ml bottles all the time. I buy mostly 30ml now and it saves me money and room in my carry case.
To wash, I use warm water and dishwashing soap. Sometimes the bottle has a slight aroma from the last liquid but it goes away with putting the new juice in it. Never noticed a blending of flavor doing this.
To wash, I use warm water and dishwashing soap. Sometimes the bottle has a slight aroma from the last liquid but it goes away with putting the new juice in it. Never noticed a blending of flavor doing this.