Protini and Lala (new or old) are completely different.
Protini has a boatload of peptides (levels too high for some countries ‘ regulatory authorities) that are meant to stimulate collagen production.
Lala is a basic moisturizer with various oils providing lipids that support the skin barrier. Ceramides are meant to strengthen the skin barrier, which is what Lala was always intended to do...so they are a perfect addition to the formula, not “fillers” at all. Lala is still very basic/bland with no actives, perfect for very sensitive skin.
Ceramides are what the entire CeraVe line is built around. Besides fillers, ceramides are pretty much all that's in Cerave Moisturizing Cream in the tub, and you can’t get much more basic than CeraVe in the tub. The behentrimonium methosulfate in CeraVe breaks me out so I am thrilled to be able to get ceramides in a moisturizer that doesn’t have that crap! Loving the new Lala!
Here is some info from Paula’s Choice
ceramides | Paula's Choice
and from the CeraVe web site
What Are Ceramides? | CeraVe
Hope this helps!