Emollients and occlusives
Petrolatum
INCI: Petrolatum · petroleum jelly · Vaseline
One of the most effective ways to reduce water loss, with texture—not evidence—as the main tradeoff.
What it is best suited for
What result is realistic
A realistic improvement is possible with consistent use, but response varies by formula and context.
- Initial change
- Immediate to days
- When to evaluate
- 1–2 weeks
- Expected benefit
- Meaningful
What it is and what we know
A highly effective occlusive for reducing water loss; texture and acne-prone preferences affect practicality.
Its usefulness depends on the goal, vehicle, concentration context, frequency, and the rest of the routine.
Who may find it irritating
Irritation potential: Low. Formula, frequency, and barrier condition change tolerability.
No special restriction is modeled here, but individual products and circumstances still matter. It is not modeled as inherently photosensitizing; sun protection still matters for most skin goals.
How a beginner can introduce it
Introduce consistently in a simple routine and adjust to tolerance.
Useful concentration depends on the ingredient form and complete formula. Ingredient order alone cannot establish a studied concentration.
What not to expect
No single ingredient guarantees a result or compensates for an irritating, inconsistent routine.
Ingredient evidence does not guarantee that every product formula performs equally.
What may duplicate it
Emollients and occlusives is its functional family. Several products from this family can repeat the same role, especially when they are irritation-prone.
Same family: Squalane.
Verified products containing it
Evidence and uncertainty
Editorial preview. Complete source lists and clinical review are not yet published. TIER therefore avoids “best” claims and does not show a public numeric score.
Skin barrier · Established
- Evidence certainty
- Established
- Editorial confidence
- High
- Published sources
- 0
- Status
- Editorial preview
- Last reviewed
- 2026-07-14
The priority score combines evidence confidence, expected benefit, tolerability, practicality, time, and relative cost. It is not an efficacy percentage.
Important uncertainty: Ingredient evidence does not guarantee that every product formula performs equally.
Next best alternative
Ceramides is the next-ranked option for Skin barrier. Compare it before adding another active.
Compare alternatives