What did your hair feel like to you? "Soft" and "Moisturized" are subjective. However, if you have noticed that your hair has been feeling hard or dry, try a hot oil treatment or moisturizing deep conditioner. To enhance the benefits of both, you can do several things:
1. Turn on your shower (full blast) to hot water only, close the bathroom door and put your hot oil or deep conditioner on your head followed by a shower cap or warm towel. Stay there for 5-20 minutes and then rinse.
2. Wrap a warm towel around your hair either with or without a shower cap underneath
3. Use a soft/hard bonnet dryer or steamer for 5-60 minutes
4. Keep your hair in a shower cap without heat for as long as you desire
You actually don't HAVE to alternate products. What's best is finding things that work for your hair and using them consistently. You don't have to buy everything that comes out, and you don't have to have an arsenal or different hair products to achieve your ideal hair.
If you do notice that your hair likes one conditioner one week and one the next, stock up so you can switch. I've noticed that my hair likes only a select few (four different) conditioners, so I use a different one each week of the month.
Hair and scalp usually become drier in the cooler months, so you should try the hot oil treatments as a pre-shampoo. This will help lock in moisture and enhance the effects you get from using moisturizing conditioners.
You may want to try the following if you haven't already:
Moisturizing Deep Conditioners:
NTM Recovery Mask
L'Oreal Nature's Therapy Mega Moisture
Placenta Deep Conditioner
LeKair Cholesterol Plus
Queen Helene Cholesterol
Fresh's Meadowfoam Conditioning Cream
Hot oil:
Jojoba
Extra Virgin Olive Oil
Coconut
Monoi
Meadowfoam
For added moisture, try applying oil on dry hair and adding your favorite conditioner right on top. Then sit under the dryer (or use another method) for about 45 minutes.
As for shampoo, find something that won't dry your hair out. Two good moisturizing shampoos are Dabur Vatika Henna Cream Conditioning shampoo and Kenra Moisturizing shampoo.