diff --git a/pandas/core/frame.py b/pandas/core/frame.py
index 3669d8249dd27..d9f7623064e05 100644
--- a/pandas/core/frame.py
+++ b/pandas/core/frame.py
@@ -13673,6 +13673,10 @@ def isin_(x):
         doc="""
         The column labels of the DataFrame.
 
+        This property holds the column names as a pandas ``Index`` object.
+        It provides an immutable sequence of column labels that can be
+        used for data selection, renaming, and alignment in DataFrame operations.
+
         Returns
         -------
         pandas.Index