Significant for my little one, size is perfect, quality is good, usage is easy, scent is elegant. Gentle for the sensitive hair. Moisturizer for the damaged hair. Highly recommend. I noticed the benefits after the first use. I believe it suites any age, you could know more by reading the detailed instructions.
If your hair tends to be frizzy and dry, this shampoo helps a lot. Although I was paying 3x the price for another brand, this shampoo actually did a better job, leaving my hair soft, reducing the frizz and was more manageable.