Im sick of this as being a beauty standard for women, one reader wrote.

Many of us dont care about having wrinkles as we age.

The plastic surgeon became known in 1992 for using Botox to alleviate chronic migraines.

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The regularly treated twin received Botox injections approximately 2 to 3 times each year.

Conversely, the untreated twin received only two injections in the 13 years the study lasted.

Others expressed concern over the usage of the toxin for such a long period.

Twin sisters compared: one ages naturally, the other uses Botox, highlighting different aging effects.

I find it hard to believe that injecting botulism toxin regularly wont have other serious side-effects.

Beauty is defined by so much more.

Check out the results:

Close-up of a woman with Botox injection points on her face.

Twin comparison: one aging naturally, the other with Botox treatment.

Twin sisters showing natural aging on the left and Botox effects on the right in a side-by-side comparison.

Twin comparison: one ages naturally, other with Botox; netizens react.

Twin sisters, one showing natural aging, and the other with Botox treatment.

Twin sisters comparison: one with natural aging and the other with Botox, showcasing differences in facial appearance.

Person receiving Botox injection, healthcare professional wearing pink gloves and a hair cap.

Close-up of a woman’s face with a headband, showing natural aging features.

Close-up of a woman’s face with black rectangles over her eyes, showing effects of Botox treatment.

Woman with headband showing natural aging, highlighted as one twin ages naturally compared to Botox use.

Comment comparing twins, one aging naturally, the other using Botox.

Comment comparing twins' aging, one using Botox.

Comment on twins aging naturally vs. with Botox, netizen sees no difference.

Comment comparing twins aging naturally and with Botox, reading “Not a lot of difference.

Comment on aging naturally vs. with Botox says, “They look exactly the same to me.

Comment discussing Botox usage in relation to youth.

Comment from user comparing twins' faces after one ages naturally and the other uses Botox.

Comment by user Jenny Robinson saying, “They both look beautiful,” discussing twins aging naturally and with Botox.

Comment discussing the effects of Botox on aging and facial appearance.

Comment discusses Botox benefits, comparing it to high-quality face cream in a conversation about natural aging vs. cosmetic procedures.