Creating a deodorant by combining beeswax, sweet almond oil, coconut oil, flaxseed oil, and walnut oil with lavender essential oil for fragrance can offer a natural and potentially effective product. However, it's important to note that deodorant formulations can be more complex and require careful consideration of various factors. Here are the potential benefits and considerations of this combination:

Potential Benefits:
1. Odor Control: Beeswax, along with the combination of oils, can help provide a barrier that helps control odor by reducing moisture and inhibiting bacterial growth.

2. Moisturization: Sweet almond oil, coconut oil, flaxseed oil, and walnut oil can help moisturize the underarm area and maintain skin health.

3. Nutrient-Rich: Flaxseed oil and walnut oil are rich in omega-3 fatty acids, which can offer additional skin-nourishing properties.

4. Fragrance: Lavender essential oil can provide a pleasant and calming fragrance, enhancing the user experience.

5. Natural Ingredients: Using natural ingredients reduces the exposure to potentially harmful chemicals found in some commercial deodorants.

6. Soothing: The combination of oils and beeswax can help soothe the skin, potentially reducing irritation from shaving or other factors.

Considerations:

1. Formulation: Deodorants require a balance between odor control, consistency, and ease of application. The correct proportions of wax, oils, and other ingredients are crucial.

2. Solidity: Achieving the right solidity is important for a deodorant stick. Beeswax helps solidify the product, but finding the right balance is key.

3. Allergies and Sensitivities: Lavender essential oil is generally considered safe, but some individuals may have sensitivities or allergies. Always perform a patch test.

4. Skin Reaction: Some people may develop irritation or sensitivities to certain essential oils or oils. Test the deodorant on a small area before full application.

5. Effectiveness: While natural ingredients can help control odor, the effectiveness may vary from person to person. Experimentation might be necessary to find what works for you.

6. Staining: Some natural oils, including walnut oil, can potentially stain clothing. Consider this when formulating the deodorant.

Creating a homemade deodorant involves more complexities than a simple mixture, as achieving the right consistency and effectiveness requires experimentation. Ensure you have a well-balanced formula and consider conducting stability tests. If you're new to making deodorants, it might be helpful to consult resources or experts in natural skincare formulations.