Best for cost per product
The Ordinary
Deciem's bare-bones, ingredient-labeled active serums
BEST FORA budget-conscious skincare enthusiast comfortable researching concentrations who wants to build a custom multi-active routine without brand markup.
Reviewed by the Clientele Research Team · Last checked 3 days ago (2026-07-21)
Scores — click any row to see our rationale
Cost per product & routine▼10/10
Active ingredients & evidence▼8/10
Sensitive/acne-prone skin fit▼6/10
Routine simplicity▼4/10
Where to buy & availability▼8/10
PROS
✓Single-ingredient actives are priced $6-15, e.g. Niacinamide 10% + Zinc 1% at $6.00 and Glycolic Acid 7% Toning Solution at $9.00, letting you build a routine for under $30 total
✓Every product label states the exact active concentration (Retinol 0.5% in Squalane, Azelaic Acid Suspension 10%) instead of vague marketing language
✓A clinical study on the reformulated Hyaluronic Acid 2% + B5 found it improved skin elasticity within four weeks, per Glossy's reporting on the study
✓365-day return window on theordinary.com and free shipping over $25 remove risk from experimenting with new actives
✓Products are available at mainstream retailers (Target, Ulta) as well as direct, so there's no exclusive-access barrier like some prestige brands
✓A $35 hardcover 'Ingredients' book exists specifically to explain the mechanism of action behind each formula, an unusual level of transparency
CONS
✕The Ordinary's own guidance caps routines at 3 serums and warns that overloading causes 'pilling' — beginners can easily buy more actives than they should combine
✕The 2023 Salicylic Acid 2% Solution reformulation pulled the product from shelves for two years and created a waitlist of 400,000+ people, showing real availability risk on bestsellers
✕Direct acids in the line commonly sting or cause mild itching on first application, meaning first-time acid users should expect some discomfort during patch testing
✕There's no single flagship moisturizer or cleanser as strong a hero product as CeraVe's ceramide cream — the brand is serum/treatment heavy rather than barrier-repair focused
✕Layering multiple direct acids (AHA/BHA) with retinoids in the same routine is explicitly flagged as an irritation risk in the brand's own product pages
✕Because pricing is so low per bottle, building a full routine still means purchasing 4-6+ separate products to replicate what a single Rhode or CeraVe moisturizer does in one step