Side-by-side comparison

Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum vs Paula's Choice Clinical 1% Retinol Treatment

Both are serums. They share a 77% active-ingredient overlap, so the real decision is about price, texture and the supporting ingredients. Here's the side-by-side.

77%Active overlap
Kiehl's
Retinol Skin-Renewing Daily Micro-Dose Serum
SerumPremiumEvening only
Fine LinesRough TexturePhotoaging Prevention

A micro-dosed retinol serum with ceramide and peptide support designed for daily use with less irritation. A gentle daily-retinol approach for those who can't tolerate higher strengths; gradual, cumulative results.

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Paula's Choice
Clinical 1% Retinol Treatment
SerumPremiumEvening only
Fine LinesPhotoaging PreventionRough Texture

A higher-strength 1% retinol treatment buffered with peptides, vitamin C and liquorice. A serious step-up retinol for experienced users targeting wrinkles and tone; introduce slowly and pair with barrier support.

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The verdict

Which should you choose?

Both sit in the Premium tier, so cost isn't the deciding factor here — choose on texture, finish and the supporting ingredients. These two are close on the measurable attributes we track — it comes down to texture and personal preference.

The overlap

What they share

At 77% active overlap, these are the ingredients doing comparable work in both formulas:

PeptidesRetinol
The formulation

Ingredient stacks, side by side

Kiehl's — top of the list

  • Aqua~50–80%
  • Dimethicone~5–25%
  • Glycerin~3–10%
  • Retinol~2–6%
  • Ceramide NP~1.5–4%

Paula's Choice — top of the list

  • Aqua~50–80%
  • Cyclopentasilox…~5–25%
  • Glycerin~3–10%
  • Dimethicone~2–6%
  • Retinol~1.5–4%

● marks ingredients that appear near the top of both lists. Percentages are positional estimates from INCI order, not disclosed doses.

At a glance

The specs

Kiehl'sPaula's Choice
CategorySerumSerum
Price tierPremiumPremium
Best forFine Lines, Rough Texture, Photoaging PreventionFine Lines, Photoaging Prevention, Rough Texture
Usage notesEvening onlyEvening only
Active overlap77% — Peptides, Retinol
Questions

Common questions

Is the Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum or the Paula's Choice Clinical 1% Retinol Treatment better?
Neither is clearly better — they overlap 77% on active ingredients and sit in the same price tier. The difference comes down to texture, finish and the supporting ingredients, so the right choice depends on your skin type and preferences.
What's the difference between the Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum and the Paula's Choice Clinical 1% Retinol Treatment?
Both are serums that share Peptides, Retinol. Where they differ: the formulations are close, differing mainly in texture and supporting ingredients.
Are the Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum and Paula's Choice Clinical 1% Retinol Treatment dupes for each other?
They share 77% active-ingredient overlap based on published INCI lists, so one can stand in for the other on the actives that matter — chiefly Peptides, Retinol. A dupe matches the hero actives, not the full sensory experience, so expect differences in texture, fragrance and exact concentrations.
Can I use the Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum and Paula's Choice Clinical 1% Retinol Treatment together?
They both fill the serum slot in a routine, so you'd normally pick one rather than layer both. If you want to use both, treat one as your daytime option and the other for evening, and patch-test when introducing anything new.
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70% overlap

Want a deeper, personalised read? Drop both products into the live comparison tool for an ingredient-by-ingredient breakdown tuned to your skin profile.

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