summers eve wash?

I have used summers <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> and everytime I use it a couple days later I have an itch that won't go away and my vagina is red and swollen, there's no lesions or bumps but I know it's from the summers <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> because when I don't use it it doesn't happen. why do I feel like this ?