Increasing returning customers through SEO involves optimizing your website to improve its visibility in search engine results and ensuring a positive user experience that encourages repeat visits. Here are some SEO strategies that can help boost your customer retention:

1. **High-Quality Content**: Create engaging, valuable, and relevant content that resonates with your target audience. Regularly update your website with fresh content, such as blog posts, articles, videos, or guides. Informative and entertaining content can keep visitors coming back for more.

2. **Keyword Research**: Conduct thorough keyword research to understand what search terms your target audience is using. Optimize your content and website structure around these keywords to increase your chances of ranking higher in relevant search results.

3. **User Experience (UX) Optimization**: Ensure that your website is user-friendly, easy to navigate, and loads quickly. A good user experience encourages visitors to return. Optimize your website for mobile devices as well since a significant portion of users browse on smartphones and tablets.

4. **Personalization**: Use data from returning visitors to personalize their experience on your website. Offer personalized recommendations, content suggestions, or special discounts based on their previous interactions or purchase history.

5. **Optimize Meta Tags**: Craft compelling and relevant meta titles and descriptions for each page. These tags show up in search results and can influence whether users click through to your website.

6. **Internal Linking**: Implement internal linking between related pages on your website. This helps search engines understand the structure and hierarchy of your content and keeps users engaged by leading them to relevant pages.

7. **Encourage Social Sharing**: Create shareable content and include social media sharing buttons on your website. When visitors share your content, it can lead to increased visibility and potential returning customers.

8. **Email Marketing**: Use SEO to drive traffic to your website and then encourage visitors to subscribe to your email list. Through email marketing, you can nurture customer relationships, share valuable content, and offer exclusive deals to bring them back.

9. **Customer Reviews and Testimonials**: Positive reviews and testimonials build trust and credibility. Encourage customers to leave reviews on your website or third-party review platforms, and respond to reviews, both positive and negative, to show that you value customer feedback.

10. **Monitor and Analyze**: Regularly monitor your website’s performance using tools like Google Analytics. Analyze user behavior, identify patterns, and make data-driven improvements to enhance user experience and retention.

11. **Local SEO**: If your business has a physical location, optimize your website for local searches. This can help attract local customers and encourage them to return if they had a positive experience.

Remember that SEO is an ongoing process, and it takes time to see results. Consistency, continuous improvement, and providing value to your audience are key factors in increasing returning customers through SEO.