Let $f:ℝ→ℝ$ be a real analytic function with infinitely many isolated zeros. Let us define the function: $$h(s₁,s₂,...,s_{r+1})=\prod_{k=1}^{r+1}f^{(k+1)}(\left(12\prod_{j=1}^{k}s_{j}\right)$$ Also, all the $k$th derivatives of $f$ have infinitely many isolated zeros. Does $h$ have infinitely many isolated zeros? I know that $f′(12s₁)=0$ has infinitely many isolated zeros.

I assume $f$ was a realvalued analytic function on $(0,1)$, otherwise I do not understand the notation for $h$. But then no zero of $h$ can be isolated. Indeed, the zero set of $h$ is the union of the zero sets of its $r+1$ factors, and all of them vanish on some $r$ dimensional submanifold of $(0,1)^{r+1}$. 

