Start with the complete ingredient list, then the directions. The headline on the front of a bottle tells only part of its story.
Read the whole formula
Look past the ingredient named in large type. A cream also needs ingredients that give it its form, help it spread and keep it usable. An unfamiliar name is a reason to ask a question, rather than a reason to put the bottle down.
Understand the order
US cosmetic labels generally list ingredients in descending order of predominance. There are exceptions, including ingredients at one percent or less and color additives. Position is therefore not a reliable way to calculate an exact concentration.
Nor is it a ranking of importance. An ingredient near the bottom can have a useful role; one near the top need not be the reason you chose the product.
Make it personal
If you already know an ingredient does not agree with you, check for that name first. Keep a photograph of the label so you can compare it with products you have used before. A clinician can help interpret the list when an allergy is involved.
On every Ozera product page, open Full ingredient list. You will find the complete list there, alongside the directions and the manufacturer's formulation attributes.
Further reading: FDA: cosmetic labeling guide
Photography: Annie Spratt / Unsplash. Editorial photograph.