Is the Ole Henriksen serum for acne as efficacious as its reviews?

I am in early 30s and I am presently using age defying serum from L’Oreal, which is working fine. However, recently I went through a couple of reviews of Ole Henriksen products, and I found them quite useful. Especially the Ole Henriksen serum for acne. This is one thing, which troubles me a lot, and I am tired of using several products for getting rid of them. I would like to know from some beauty expert, whether Ole Henriksen products are efficacious enough in treating acne and keeping them off forever. I would really love to hear from you soon! Please advice appropriately! Thanks.