The Ordinary
The Ordinary Retinol 0.5% in Squalane
$6-8
Key Takeaways
- 0.5% retinol is an effective mid-strength option for users who've outgrown beginner formulas but aren't ready for 1%
- The squalane oil base provides emollient cushioning that reduces the dryness and peeling common with water-based retinol
- Oxidation is a real limitation of this product's packaging — store carefully and use within 6 months of opening
- Budget-friendly retinol that punches above its price point when stored and applied correctly
Best For
Pros & Cons
Pros
- Affordable entry to mid-strength retinol at 0.5%
- Squalane base minimizes dryness and irritation compared to water-based retinol formulas
- Good stepping stone between beginner (0.2%) and advanced (1%) retinol
- Small ingredient list reduces variables if irritation occurs
Cons
- Oxidizes relatively quickly once opened — exposure to light and air degrades retinol
- Standard dropper bottle offers no airless protection; use within 6 months of opening
- Initial purging period of 4-8 weeks can be discouraging for new users
Key Ingredients
Retinol
The gold standard anti-aging ingredient. Retinol is a vitamin A derivative that accelerates cell turnover, stimulates collagen synthesis, and treats acne, hyperpigmentation, and fine lines. Decades of clinical research back its efficacy.
Squalane
A stable, plant-derived hydrocarbon that closely mimics the skin's own natural sebum. Lightweight yet deeply nourishing, squalane replenishes lost lipids, repairs the skin barrier, and works seamlessly with virtually every other skincare ingredient.
Full Ingredient List
Squalane, Caprylic/Capric Triglyceride, Retinol, Solanum Lycopersicum (Tomato) Fruit Extract, Simmondsia Chinensis (Jojoba) Seed Oil, BHT, Ethylene/Propylene/Styrene Copolymer, Butylene/Ethylene/Styrene Copolymer
Overview
Retinol is the most evidence-backed anti-aging ingredient in skincare. The problem has historically been cost — effective retinol formulas from established brands often run $50-100+. The Ordinary Retinol 0.5% in Squalane changes that calculus, delivering a mid-strength retinol in a thoughtfully chosen base for under $8.
This review covers how it compares to the category, what to expect from 0.5% retinol, and what the packaging trade-offs actually mean for your results.
Ingredient Analysis
Retinol (0.5%) is pure vitamin A alcohol — the form that the skin converts to retinoic acid (the biologically active form) via enzymatic processes in the epidermis. It’s less potent than prescription tretinoin, which delivers retinoic acid directly, but significantly more so than retinol esters (retinyl palmitate, retinyl acetate) found in many cosmetic formulations. At 0.5%, this is genuinely mid-strength — more than beginner products but not aggressive.
Squalane is the base and it’s an excellent choice. Squalane is a stable, non-comedogenic emollient derived from olive (or sugarcane). It matches the skin’s natural sebum composition closely, provides slip, and creates an oil-in-oil environment that moderates how quickly retinol absorbs. This buffering effect is one reason this formula is often better tolerated than water-based retinol serums.
BHT is an antioxidant preservative that helps protect retinol from oxidation within the formula — though the packaging limits its effectiveness.
Solanum Lycopersicum (Tomato) Fruit Extract adds lycopene, a carotenoid antioxidant that complements the retinol’s effects.
Texture and Application
The formula is a lightweight oil that dispenses via dropper. 2-3 drops is sufficient for the full face. Apply at night on dry skin — the squalane base absorbs cleanly without feeling greasy.
Results
At 0.5%, most users notice initial skin smoothing within 6-8 weeks once the purging phase resolves. Fine lines and texture are typically the first things to respond. Hyperpigmentation takes longer — 3-6 months of consistent use. The improvement in skin quality over 6-12 months of regular retinol use is well-documented and among the strongest evidence-based outcomes in skincare.
Verdict
For the price, this is one of the best retinol products available. The squalane base is a genuine formulation advantage, and the 0.5% dose sits in the right range for users who’ve already spent 4-6 weeks on a lower-strength retinol. The oxidation risk from the packaging is a real concern — store it properly, use it consistently, and don’t hold onto an open bottle for a year.
Frequently Asked Questions
How do I introduce retinol without destroying my skin barrier?
Start with 1-2 nights per week on fully dry skin (moisture speeds absorption and irritation). Apply a thin layer, then follow with moisturizer. After 4 weeks without major irritation, increase to every other night. The "sandwich method" — moisturizer, retinol, moisturizer — further reduces irritation for very sensitive users. Never use on the same night as AHAs or BHAs when starting out.
Why does my skin get worse before it gets better on retinol?
Purging. Retinol accelerates cell turnover, which pushes congestion to the surface faster than it would naturally clear. This can look like a breakout but is actually the skin clearing out. Purging typically resolves within 4-8 weeks. True breakouts from retinol (as opposed to purging) tend to appear in areas where you don't normally break out.
How should I store The Ordinary Retinol to prevent oxidation?
Keep it in a dark, cool location — a drawer or medicine cabinet away from light. The amber-tinted bottle provides some protection, but the standard dropper cap allows air exposure with every use. If the formula turns yellow or orange, it has oxidized and is less effective. Using it within 6 months of opening is the safest approach.