what are genuinely good and effective lash serums????

im soooo sick of going on tiktok and EVERY. SINGLE. POST. about lash serums are ads or sponsered like i do not trust those at alllllllllll. does anyone here have any tried and true serums that they swear by? I was thinking abt buying the terez and honors one bc ive heard good things but im wary bc i still feel like all the reviews online are sponsoered so idk.....plz plz let me knooowww bc im tryna go on my lash health journey and grow them long again lol!!!!!!