Place dry oats in a blender or grinder. Blend until you get a very fine powder. The texture should feel like soft flour. This helps the oatmeal mix smoothly.

Pour warm distilled water into a small saucepan. Heat it gently for two to three minutes. Do not boil the water. It should feel warm, not hot.

Add the ground oatmeal into the warm water. Stir well until smooth. This step helps soften the oats. Let it sit for five minutes to thicken slightly.

Use a fine strainer to remove large oat pieces. Press gently with a spoon. This gives you a smooth liquid base. Smooth texture makes the shower gel gentle.

In a mixing bowl, add honey, coconut oil and vitamin E oil. Stir slowly until well combined. Honey adds moisture. Coconut oil helps nourish dry skin deeply.

Pour the liquid castile soap into the bowl. Mix gently to avoid bubbles. Stir slowly in one direction. This keeps the shower gel smooth and creamy.

Slowly add the strained oatmeal liquid into the soap mixture. Stir gently until everything blends well. Make sure there are no lumps in the mixture.

Add lavender essential oil if you like fragrance. Stir gently again. This gives a relaxing smell. You can skip this step if you prefer no scent.

Use a funnel to pour the mixture into an empty shower gel bottle. Close the lid tightly. Shake gently before each use for best results.