Lancôme Définicils Defining & Lengthening Mascara dupe

L'Oréal Paris Telescopic Original Lengthening Mascara – Blackest Black

−66%per oz

Lancôme · $28.90L'Oréal Paris · $11.97

Shared: Beeswax, Carnauba wax, Panthenol
The trade-off: Définicils carries more of the stearic acid and uses a grooved-bristle brush; Telescopic's brush is flexible, with a flat side to lengthen and a comb side to separate, and it adds a film former.
Sizes: 6.5 ml against 8 ml

Définicils Defining & Lengthening Mascara costs about $28.90 for 6.5 ml ($131.49 / fl oz). The dupe below is L'Oréal Paris Telescopic Original Lengthening Mascara – Blackest Black at $11.97, about 66% less per ounce. Each pair is compared on format, finish and key ingredients, including what the dupe doesn't do.

Lengthening mascara with a grooved-bristle brush that separates each lash, and panthenol to condition them.

Amazon prices as of Sep 28, 2026, 1:12 AM ET, subject to change: the price on Amazon at checkout is the one that applies.

Buy the $11.97 dupe See the original

The dupe, side by side

The original

Lancôme

Définicils Defining & Lengthening Mascara

$28.90

$131.49 / fl oz

Cost per fl oz

Lancôme$131.49 / fl oz

L'Oréal Paris$44.25 / fl oz

$16.93 less at checkout than the original.

Size: Original · Lancôme6.5 ml; Dupe · L'Oréal Paris8 ml
Key ingredients: Original · LancômeBeeswax, Carnauba wax, Panthenol; Dupe · L'Oréal ParisBeeswax, Carnauba wax, Panthenol

What matches

The same lengthening formula from the same group: paraffin, beeswax, carnauba wax and acacia senegal gum held in a stearic and palmitic acid emulsion with triethanolamine, and nine of the first ten ingredients on the two lists are shared, panthenol included further down.

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Questions

What is the best dupe for Lancôme Définicils Defining & Lengthening Mascara?

L'Oréal Paris Telescopic Original Lengthening Mascara – Blackest Black at about $11.97. The same lengthening formula from the same group: paraffin, beeswax, carnauba wax and acacia senegal gum held in a stearic and palmitic acid emulsion with triethanolamine, and nine of the first ten ingredients on the two lists are shared, panthenol included further down.

How much cheaper is L'Oréal Paris Telescopic Original Lengthening Mascara – Blackest Black than Définicils Defining & Lengthening Mascara?

Définicils Defining & Lengthening Mascara costs about $28.90 for 6.5 ml, or $131.49 / fl oz. L'Oréal Paris Telescopic Original Lengthening Mascara – Blackest Black works out at $44.25 / fl oz, roughly 66% less per ounce.

What does L'Oréal Paris Telescopic Original Lengthening Mascara – Blackest Black do worse than Définicils Defining & Lengthening Mascara?

Définicils carries more of the stearic acid and uses a grooved-bristle brush; Telescopic's brush is flexible, with a flat side to lengthen and a comb side to separate, and it adds a film former.