diff --git a/__tests__/purgeUnusedStyles.test.js b/__tests__/purgeUnusedStyles.test.js
index 99b458e4c244..0deb240d939f 100644
--- a/__tests__/purgeUnusedStyles.test.js
+++ b/__tests__/purgeUnusedStyles.test.js
@@ -389,30 +389,6 @@ test('you can purge just base and component layers (but why)', () => {
   )
 })
 
-test('does not purge components when mode is conservative', () => {
-  return inProduction(
-    suppressConsoleLogs(() => {
-      const inputPath = path.resolve(`${__dirname}/fixtures/tailwind-input.css`)
-      const input = fs.readFileSync(inputPath, 'utf8')
-
-      return postcss([
-        tailwind({
-          ...config,
-          purge: {
-            mode: 'conservative',
-            content: [path.resolve(`${__dirname}/fixtures/**/*.html`)],
-          },
-        }),
-      ])
-        .process(input, { from: inputPath })
-        .then((result) => {
-          expect(result.css).toContain('.container')
-          assertPurged(result)
-        })
-    })
-  )
-})
-
 test('extra purgecss control comments can be added manually', () => {
   return inProduction(
     suppressConsoleLogs(() => {
@@ -632,52 +608,6 @@ test(
   })
 )
 
-test('the `conservative` mode can be set explicitly', () => {
-  return inProduction(
-    suppressConsoleLogs(() => {
-      const inputPath = path.resolve(`${__dirname}/fixtures/tailwind-input.css`)
-      const input = fs.readFileSync(inputPath, 'utf8')
-
-      return postcss([
-        tailwind({
-          ...config,
-          purge: {
-            mode: 'conservative',
-            content: [path.resolve(`${__dirname}/fixtures/**/*.html`)],
-          },
-        }),
-      ])
-        .process(input, { from: inputPath })
-        .then((result) => {
-          expect(result.css).not.toContain('.bg-red-600')
-          expect(result.css).not.toContain('.w-1\\/3')
-          expect(result.css).not.toContain('.flex')
-          expect(result.css).not.toContain('.font-sans')
-          expect(result.css).not.toContain('.text-right')
-          expect(result.css).not.toContain('.px-4')
-          expect(result.css).not.toContain('.h-full')
-
-          expect(result.css).toContain('.bg-red-500')
-          expect(result.css).toContain('.md\\:bg-blue-300')
-          expect(result.css).toContain('.w-1\\/2')
-          expect(result.css).toContain('.block')
-          expect(result.css).toContain('.md\\:flow-root')
-          expect(result.css).toContain('.h-screen')
-          expect(result.css).toContain('.min-h-\\(screen-4\\)')
-          expect(result.css).toContain('.bg-black\\!')
-          expect(result.css).toContain('.font-\\%\\#\\$\\@')
-          expect(result.css).toContain('.w-\\(1\\/2\\+8\\)')
-          expect(result.css).toContain('.inline-grid')
-          expect(result.css).toContain('.grid-cols-3')
-          expect(result.css).toContain('.px-1\\.5')
-          expect(result.css).toContain('.col-span-2')
-          expect(result.css).toContain('.col-span-1')
-          expect(result.css).toContain('.text-center')
-        })
-    })
-  )
-})
-
 test('element selectors are preserved by default', () => {
   return inProduction(
     suppressConsoleLogs(() => {
diff --git a/src/featureFlags.js b/src/featureFlags.js
index c57f452bfa61..56713ee3acb5 100644
--- a/src/featureFlags.js
+++ b/src/featureFlags.js
@@ -3,12 +3,7 @@ import chalk from 'chalk'
 import log from './util/log'
 
 const featureFlags = {
-  future: [
-    'purgeLayersByDefault',
-    'defaultLineHeights',
-    'standardFontWeights',
-    'moveTruncateToTextOverflow',
-  ],
+  future: ['defaultLineHeights', 'standardFontWeights', 'moveTruncateToTextOverflow'],
   experimental: [
     'uniformColorPalette',
     'extendedSpacingScale',
diff --git a/src/lib/purgeUnusedStyles.js b/src/lib/purgeUnusedStyles.js
index d3f5076cabf1..cf15281540e9 100644
--- a/src/lib/purgeUnusedStyles.js
+++ b/src/lib/purgeUnusedStyles.js
@@ -49,13 +49,9 @@ export default function purgeUnusedUtilities(config, configChanged) {
 
   return postcss([
     function (css) {
-      const mode = _.get(
-        config,
-        'purge.mode',
-        flagEnabled(config, 'purgeLayersByDefault') ? 'layers' : 'conservative'
-      )
+      const mode = _.get(config, 'purge.mode', 'layers')
 
-      if (!['all', 'layers', 'conservative'].includes(mode)) {
+      if (!['all', 'layers'].includes(mode)) {
         throw new Error('Purge `mode` must be one of `layers` or `all`.')
       }
 
@@ -63,19 +59,7 @@ export default function purgeUnusedUtilities(config, configChanged) {
         return
       }
 
-      if (mode === 'conservative') {
-        if (configChanged) {
-          log.warn([
-            'The `conservative` purge mode will be removed in Tailwind 2.0.',
-            'Please switch to the new `layers` mode instead.',
-          ])
-        }
-      }
-
-      const layers =
-        mode === 'conservative'
-          ? ['utilities']
-          : _.get(config, 'purge.layers', ['base', 'components', 'utilities'])
+      const layers = _.get(config, 'purge.layers', ['base', 'components', 'utilities'])
 
       css.walkComments((comment) => {
         switch (comment.text.trim()) {