Can I add "Peach Flavoring" with F pack of kit?

[googoochummer]

I'm making a kit of Strawberry white Merlot from an Island Breeze kit. I added some peach nectar to the must, but it didn't produce much peach flavor. I'm a couple of days from fining and would like to know if I could add a peach flavoring I bought for bottled water to bump up the peach note. it contains; propylene glycol,water, polysorbate 80 and artificial flavors. I read somewhere that certain ingredients in juices off the shelf would inhibit wine or produce off tastes. Does anyone know if this would be okay to add at fining?

 

[malkore]

my guess is the polysorbate is going to have a similar effect as potassium sorbate.
So as long as you add it once fermentation is over, it shouldn't mess stuff up.