Expert Advice and FAQs
About Probiom8

Results are visible from day one. Over 8 weeks, your skin's bacterial composition gradually shifts toward a healthier balance. Some fluctuation is normal along the way – it means your microbiome is actively rebalancing. Stick with it, and the full picture will become clearer as the weeks go on.

Clinical studies show that rebuilding and rebalancing the skin microbiome takes around 8 weeks. Visible improvements can appear earlier – but real, long-lasting results require the full protocol to run its course. As dermatologists often say, treating acne-prone skin is a marathon, not a sprint. Stopping early or skipping steps disrupts the rebalancing process and limits what the routine can deliver. Give it the full 8 weeks and let the science do its work.

Yes. Probiom8 is developed with skin tolerance as a core requirement, and all products in the routine are dermatologist-tested. It is built around skin-native probiotics that work in harmony with the skin's natural biology to rebalance the microbiome and support the skin barrier, making it suitable for sensitive, acne-prone skin when used as directed.

Short answer: no. Probiom8 works best on its own. A lot of products for acne-prone skin have harsh ingredients that can throw off your microbiome – using them alongside the Probiom8 routine risks undoing the progress you are making.

Sunscreen is the one thing worth adding to your morning routine. Complete it with Eucerin Sun Oil Control, available separately. In case you need additional care, DermoPure Clinical HydraRepair can be added as an extra morning step before your SPF.

Discover the complete Probiom8 routine

Pre-, post- and probiotics all target the skin microbiome, but in very different ways.

Prebiotics feed the beneficial bacteria already living on your skin, a bit like fertiliser.

Postbiotics are beneficial by-products that bacteria produce and can help soothe the microbiome.

Skin-native Probiotics are living microorganisms – the only category that can actively introduce new bacterial strains to the skin. Unlike prebiotics and postbiotics, they can regulate the microbiome's composition directly, not just support what is already there.

TopiC.A is Eucerin's own skin-native probiotic technology. At its core are CA-31 and CA-81, two bacterial strains isolated from healthy human skin. A single drop delivers up to 50 million live bacteria. Once activated, they get straight to work – targeting the bacteria driving your blemishes, limiting their spread, and rebalancing your microbiome. Changes are visible from day one and keep building over the full 8 weeks.

Explore the full science behind TopiC.A and the Probiom8 approach

This can happen and it is more common than you might think. When your skin microbiome starts to rebalance, existing impurities and clogged pores can surface more quickly before things start to improve. This is known as a purging effect, and it is a sign that the routine is working. It typically occurs around week 4 and lasts up to 10 days. The most important thing: keep going. Stopping now means missing out on the results that come after.

After eight weeks, your skin should look significantly clearer. If some post-acne marks are still visible, that is completely normal. These are discolored spots that linger after inflammation and take more time to fade.

Here is what to use next:

Cleanse with Eucerin DermoPure Clinical Purifying Cleanser

Care with Eucerin DermoPure Clinical Triple Action

Protect with Eucerin Sun Oil Control Gel-Cream SPF 50+

Sunscreen becomes especially important at this stage, as it helps prevent post-acne marks from darkening and stops new ones from forming.